JP5072679B2 - Process for producing benzotrifluorides - Google Patents
Process for producing benzotrifluorides Download PDFInfo
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- JP5072679B2 JP5072679B2 JP2008078954A JP2008078954A JP5072679B2 JP 5072679 B2 JP5072679 B2 JP 5072679B2 JP 2008078954 A JP2008078954 A JP 2008078954A JP 2008078954 A JP2008078954 A JP 2008078954A JP 5072679 B2 JP5072679 B2 JP 5072679B2
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- GETTZEONDQJALK-UHFFFAOYSA-N (trifluoromethyl)benzene Chemical class FC(F)(F)C1=CC=CC=C1 GETTZEONDQJALK-UHFFFAOYSA-N 0.000 title claims description 35
- 238000000034 method Methods 0.000 title claims description 15
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical group CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 84
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical compound [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 claims description 66
- 238000004519 manufacturing process Methods 0.000 claims description 57
- -1 4,5-dihydrooxazol-2-yl group Chemical group 0.000 claims description 45
- 125000004432 carbon atom Chemical group C* 0.000 claims description 41
- 235000003270 potassium fluoride Nutrition 0.000 claims description 33
- 239000011698 potassium fluoride Substances 0.000 claims description 33
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 125000005843 halogen group Chemical group 0.000 claims description 15
- 150000008424 iodobenzenes Chemical class 0.000 claims description 12
- 150000001879 copper Chemical class 0.000 claims description 11
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 10
- 150000003222 pyridines Chemical class 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 125000000547 substituted alkyl group Chemical group 0.000 claims description 8
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 7
- 125000004453 alkoxycarbonyl group Chemical group 0.000 claims description 6
- 125000000217 alkyl group Chemical group 0.000 claims description 6
- 150000002825 nitriles Chemical class 0.000 claims description 6
- 125000005415 substituted alkoxy group Chemical group 0.000 claims description 6
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 5
- 229910052740 iodine Inorganic materials 0.000 claims description 5
- 125000002252 acyl group Chemical group 0.000 claims description 4
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 4
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 4
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 4
- 125000004423 acyloxy group Chemical group 0.000 claims description 3
- 125000004663 dialkyl amino group Chemical group 0.000 claims description 3
- 125000005017 substituted alkenyl group Chemical group 0.000 claims description 3
- 125000004426 substituted alkynyl group Chemical group 0.000 claims description 3
- 125000004202 aminomethyl group Chemical group [H]N([H])C([H])([H])* 0.000 claims description 2
- UUEVFMOUBSLVJW-UHFFFAOYSA-N oxo-[[1-[2-[2-[2-[4-(oxoazaniumylmethylidene)pyridin-1-yl]ethoxy]ethoxy]ethyl]pyridin-4-ylidene]methyl]azanium;dibromide Chemical compound [Br-].[Br-].C1=CC(=C[NH+]=O)C=CN1CCOCCOCCN1C=CC(=C[NH+]=O)C=C1 UUEVFMOUBSLVJW-UHFFFAOYSA-N 0.000 claims 1
- 239000000243 solution Substances 0.000 description 40
- 238000005481 NMR spectroscopy Methods 0.000 description 39
- 239000000203 mixture Substances 0.000 description 35
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 29
- 239000012300 argon atmosphere Substances 0.000 description 29
- 239000005297 pyrex Substances 0.000 description 29
- MWKJTNBSKNUMFN-UHFFFAOYSA-N trifluoromethyltrimethylsilane Chemical compound C[Si](C)(C)C(F)(F)F MWKJTNBSKNUMFN-UHFFFAOYSA-N 0.000 description 29
- 238000007789 sealing Methods 0.000 description 27
- GBRBMTNGQBKBQE-UHFFFAOYSA-L copper;diiodide Chemical compound I[Cu]I GBRBMTNGQBKBQE-UHFFFAOYSA-L 0.000 description 26
- HRUBXJBPLLZTAN-UHFFFAOYSA-N n,n-dimethyl-1-pyridin-2-ylmethanamine Chemical compound CN(C)CC1=CC=CC=N1 HRUBXJBPLLZTAN-UHFFFAOYSA-N 0.000 description 24
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 18
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 230000014759 maintenance of location Effects 0.000 description 10
- WHNAMGUAXHGCHH-UHFFFAOYSA-N 1-nitro-3-(trifluoromethyl)benzene Chemical compound [O-][N+](=O)C1=CC=CC(C(F)(F)F)=C1 WHNAMGUAXHGCHH-UHFFFAOYSA-N 0.000 description 9
- CBYAZOKPJYBCHE-UHFFFAOYSA-N 1-iodo-3-nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC(I)=C1 CBYAZOKPJYBCHE-UHFFFAOYSA-N 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- XKYLCLMYQDFGKO-UHFFFAOYSA-N 1-nitro-4-(trifluoromethyl)benzene Chemical compound [O-][N+](=O)C1=CC=C(C(F)(F)F)C=C1 XKYLCLMYQDFGKO-UHFFFAOYSA-N 0.000 description 7
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 6
- DGEZNRSVGBDHLK-UHFFFAOYSA-N [1,10]phenanthroline Chemical compound C1=CN=C2C3=NC=CC=C3C=CC2=C1 DGEZNRSVGBDHLK-UHFFFAOYSA-N 0.000 description 6
- OAYLNYINCPYISS-UHFFFAOYSA-N ethyl acetate;hexane Chemical compound CCCCCC.CCOC(C)=O OAYLNYINCPYISS-UHFFFAOYSA-N 0.000 description 6
- 239000000706 filtrate Substances 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 239000012044 organic layer Substances 0.000 description 6
- 239000011541 reaction mixture Substances 0.000 description 6
- 229920006395 saturated elastomer Polymers 0.000 description 6
- 238000010898 silica gel chromatography Methods 0.000 description 6
- 239000011780 sodium chloride Substances 0.000 description 6
- SCCCFNJTCDSLCY-UHFFFAOYSA-N 1-iodo-4-nitrobenzene Chemical compound [O-][N+](=O)C1=CC=C(I)C=C1 SCCCFNJTCDSLCY-UHFFFAOYSA-N 0.000 description 5
- 238000005160 1H NMR spectroscopy Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 125000004122 cyclic group Chemical group 0.000 description 4
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 4
- ZHSKFONQCREGOG-UHFFFAOYSA-N triethyl(trifluoromethyl)silane Chemical compound CC[Si](CC)(CC)C(F)(F)F ZHSKFONQCREGOG-UHFFFAOYSA-N 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 3
- 150000001503 aryl iodides Chemical class 0.000 description 3
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 239000012230 colorless oil Substances 0.000 description 3
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 3
- 125000004186 cyclopropylmethyl group Chemical group [H]C([H])(*)C1([H])C([H])([H])C1([H])[H] 0.000 description 3
- 239000000543 intermediate Substances 0.000 description 3
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 3
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 3
- 239000008204 material by function Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 3
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 3
- SYSZENVIJHPFNL-UHFFFAOYSA-N (alpha-D-mannosyl)7-beta-D-mannosyl-diacetylchitobiosyl-L-asparagine, isoform B (protein) Chemical compound COC1=CC=C(I)C=C1 SYSZENVIJHPFNL-UHFFFAOYSA-N 0.000 description 2
- HHAISVSEJFEWBZ-UHFFFAOYSA-N 1-[4-(trifluoromethyl)phenyl]ethanone Chemical compound CC(=O)C1=CC=C(C(F)(F)F)C=C1 HHAISVSEJFEWBZ-UHFFFAOYSA-N 0.000 description 2
- GWQSENYKCGJTRI-UHFFFAOYSA-N 1-chloro-4-iodobenzene Chemical compound ClC1=CC=C(I)C=C1 GWQSENYKCGJTRI-UHFFFAOYSA-N 0.000 description 2
- SKGRFPGOGCHDPC-UHFFFAOYSA-N 1-iodo-4-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=CC=C(I)C=C1 SKGRFPGOGCHDPC-UHFFFAOYSA-N 0.000 description 2
- CFIPQRIPCRRISV-UHFFFAOYSA-N 1-methoxy-4-(trifluoromethyl)benzene Chemical compound COC1=CC=C(C(F)(F)F)C=C1 CFIPQRIPCRRISV-UHFFFAOYSA-N 0.000 description 2
- NDZJSUCUYPZXPR-UHFFFAOYSA-N 1-nitro-2-(trifluoromethyl)benzene Chemical compound [O-][N+](=O)C1=CC=CC=C1C(F)(F)F NDZJSUCUYPZXPR-UHFFFAOYSA-N 0.000 description 2
- 125000000453 2,2,2-trichloroethyl group Chemical group [H]C([H])(*)C(Cl)(Cl)Cl 0.000 description 2
- 125000004206 2,2,2-trifluoroethyl group Chemical group [H]C([H])(*)C(F)(F)F 0.000 description 2
- 125000001340 2-chloroethyl group Chemical group [H]C([H])(Cl)C([H])([H])* 0.000 description 2
- 125000004777 2-fluoroethyl group Chemical group [H]C([H])(F)C([H])([H])* 0.000 description 2
- DLFVBJFMPXGRIB-UHFFFAOYSA-N Acetamide Chemical compound CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000003905 agrochemical Substances 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- 125000004106 butoxy group Chemical group [*]OC([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 2
- 125000004744 butyloxycarbonyl group Chemical group 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 125000001309 chloro group Chemical group Cl* 0.000 description 2
- 125000004218 chloromethyl group Chemical group [H]C([H])(Cl)* 0.000 description 2
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 2
- 125000001352 cyclobutyloxy group Chemical group C1(CCC1)O* 0.000 description 2
- 125000000131 cyclopropyloxy group Chemical group C1(CC1)O* 0.000 description 2
- 125000001028 difluoromethyl group Chemical group [H]C(F)(F)* 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 125000001153 fluoro group Chemical group F* 0.000 description 2
- 125000004216 fluoromethyl group Chemical group [H]C([H])(F)* 0.000 description 2
- 125000002510 isobutoxy group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])O* 0.000 description 2
- 125000003253 isopropoxy group Chemical group [H]C([H])([H])C([H])(O*)C([H])([H])[H] 0.000 description 2
- 239000003446 ligand Substances 0.000 description 2
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 2
- 125000002524 organometallic group Chemical group 0.000 description 2
- QULYNCCPRWKEMF-UHFFFAOYSA-N parachlorobenzotrifluoride Chemical compound FC(F)(F)C1=CC=C(Cl)C=C1 QULYNCCPRWKEMF-UHFFFAOYSA-N 0.000 description 2
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 125000005920 sec-butoxy group Chemical group 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- 125000004213 tert-butoxy group Chemical group [H]C([H])([H])C(O*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 125000004784 trichloromethoxy group Chemical group ClC(O*)(Cl)Cl 0.000 description 2
- HLHBIMJNCKZZQO-SFTDATJTSA-N (4r)-4-phenyl-2-[6-[(4r)-4-phenyl-4,5-dihydro-1,3-oxazol-2-yl]pyridin-2-yl]-4,5-dihydro-1,3-oxazole Chemical compound C1([C@H]2N=C(OC2)C=2N=C(C=CC=2)C=2OC[C@H](N=2)C=2C=CC=CC=2)=CC=CC=C1 HLHBIMJNCKZZQO-SFTDATJTSA-N 0.000 description 1
- WAQJMWVRZVOTCH-AFXFGAOOSA-N (4r,5r)-4-methyl-2-[6-[(4r,5r)-4-methyl-5-phenyl-4,5-dihydro-1,3-oxazol-2-yl]pyridin-2-yl]-5-phenyl-4,5-dihydro-1,3-oxazole Chemical compound C1([C@H]2OC(=N[C@@H]2C)C=2N=C(C=CC=2)C=2O[C@@H]([C@@H](C)N=2)C=2C=CC=CC=2)=CC=CC=C1 WAQJMWVRZVOTCH-AFXFGAOOSA-N 0.000 description 1
- 0 *c1c(*)c(*)nc(*)c1* Chemical compound *c1c(*)c(*)nc(*)c1* 0.000 description 1
- ZMAUHKSOLPYPDB-UHFFFAOYSA-N 1,3,5-tris(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=CC(C(F)(F)F)=CC(C(F)(F)F)=C1 ZMAUHKSOLPYPDB-UHFFFAOYSA-N 0.000 description 1
- PDCBZHHORLHNCZ-UHFFFAOYSA-N 1,4-bis(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=CC=C(C(F)(F)F)C=C1 PDCBZHHORLHNCZ-UHFFFAOYSA-N 0.000 description 1
- LFMWZTSOMGDDJU-UHFFFAOYSA-N 1,4-diiodobenzene Chemical compound IC1=CC=C(I)C=C1 LFMWZTSOMGDDJU-UHFFFAOYSA-N 0.000 description 1
- JZJWCDQGIPQBAO-UHFFFAOYSA-N 1-(4-iodophenyl)ethanone Chemical compound CC(=O)C1=CC=C(I)C=C1 JZJWCDQGIPQBAO-UHFFFAOYSA-N 0.000 description 1
- MGYGVVVDLZIDTB-UHFFFAOYSA-N 1-[6-[(dimethylamino)methyl]pyridin-2-yl]-n,n-dimethylmethanamine Chemical compound CN(C)CC1=CC=CC(CN(C)C)=N1 MGYGVVVDLZIDTB-UHFFFAOYSA-N 0.000 description 1
- 125000004972 1-butynyl group Chemical group [H]C([H])([H])C([H])([H])C#C* 0.000 description 1
- MXPYCSFCKXSPAB-UHFFFAOYSA-N 1-fluoro-3-iodo-5-nitrobenzene Chemical compound [O-][N+](=O)C1=CC(F)=CC(I)=C1 MXPYCSFCKXSPAB-UHFFFAOYSA-N 0.000 description 1
- RKLBCPTURHSIOJ-UHFFFAOYSA-N 1-fluoro-3-nitro-5-(trifluoromethyl)benzene Chemical compound [O-][N+](=O)C1=CC(F)=CC(C(F)(F)F)=C1 RKLBCPTURHSIOJ-UHFFFAOYSA-N 0.000 description 1
- UNNNAIWPDLRVRN-UHFFFAOYSA-N 1-fluoro-4-(trifluoromethyl)benzene Chemical compound FC1=CC=C(C(F)(F)F)C=C1 UNNNAIWPDLRVRN-UHFFFAOYSA-N 0.000 description 1
- KGNQDBQYEBMPFZ-UHFFFAOYSA-N 1-fluoro-4-iodobenzene Chemical compound FC1=CC=C(I)C=C1 KGNQDBQYEBMPFZ-UHFFFAOYSA-N 0.000 description 1
- RINOYHWVBUKAQE-UHFFFAOYSA-N 1-iodo-2-methylbenzene Chemical compound CC1=CC=CC=C1I RINOYHWVBUKAQE-UHFFFAOYSA-N 0.000 description 1
- JXMZUNPWVXQADG-UHFFFAOYSA-N 1-iodo-2-nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1I JXMZUNPWVXQADG-UHFFFAOYSA-N 0.000 description 1
- VDPIZIZDKPFXLI-UHFFFAOYSA-N 1-iodo-3,5-bis(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=CC(I)=CC(C(F)(F)F)=C1 VDPIZIZDKPFXLI-UHFFFAOYSA-N 0.000 description 1
- DVFVNJHIVAPTMS-UHFFFAOYSA-N 1-methyl-2-(trifluoromethyl)benzene Chemical compound CC1=CC=CC=C1C(F)(F)F DVFVNJHIVAPTMS-UHFFFAOYSA-N 0.000 description 1
- 125000006017 1-propenyl group Chemical group 0.000 description 1
- YQTCQNIPQMJNTI-UHFFFAOYSA-N 2,2-dimethylpropan-1-one Chemical group CC(C)(C)[C]=O YQTCQNIPQMJNTI-UHFFFAOYSA-N 0.000 description 1
- 125000004974 2-butenyl group Chemical group C(C=CC)* 0.000 description 1
- 125000000069 2-butynyl group Chemical group [H]C([H])([H])C#CC([H])([H])* 0.000 description 1
- 125000006022 2-methyl-2-propenyl group Chemical group 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- 125000001494 2-propynyl group Chemical group [H]C#CC([H])([H])* 0.000 description 1
- 125000004975 3-butenyl group Chemical group C(CC=C)* 0.000 description 1
- DRNJIKRLQJRKMM-UHFFFAOYSA-N 4-(trifluoromethyl)benzonitrile Chemical compound FC(F)(F)C1=CC=C(C#N)C=C1 DRNJIKRLQJRKMM-UHFFFAOYSA-N 0.000 description 1
- XOKDXPVXJWTSRM-UHFFFAOYSA-N 4-iodobenzonitrile Chemical compound IC1=CC=C(C#N)C=C1 XOKDXPVXJWTSRM-UHFFFAOYSA-N 0.000 description 1
- HLHBIMJNCKZZQO-UHFFFAOYSA-N 4-phenyl-2-[6-(4-phenyl-4,5-dihydro-1,3-oxazol-2-yl)pyridin-2-yl]-4,5-dihydro-1,3-oxazole Chemical compound C1OC(C=2N=C(C=CC=2)C=2OCC(N=2)C=2C=CC=CC=2)=NC1C1=CC=CC=C1 HLHBIMJNCKZZQO-UHFFFAOYSA-N 0.000 description 1
- GNKZMNRKLCTJAY-UHFFFAOYSA-N CC(c1ccc(C)cc1)=O Chemical compound CC(c1ccc(C)cc1)=O GNKZMNRKLCTJAY-UHFFFAOYSA-N 0.000 description 1
- PXWYZLWEKCMTEZ-UHFFFAOYSA-N CCc(cccc1)c1[N+]([O-])=O Chemical compound CCc(cccc1)c1[N+]([O-])=O PXWYZLWEKCMTEZ-UHFFFAOYSA-N 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- 125000003668 acetyloxy group Chemical group [H]C([H])([H])C(=O)O[*] 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 125000000304 alkynyl group Chemical group 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 150000001502 aryl halides Chemical group 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- KVNRLNFWIYMESJ-UHFFFAOYSA-N butyronitrile Chemical compound CCCC#N KVNRLNFWIYMESJ-UHFFFAOYSA-N 0.000 description 1
- 238000004440 column chromatography Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 125000006222 dimethylaminomethyl group Chemical group [H]C([H])([H])N(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000006575 electron-withdrawing group Chemical group 0.000 description 1
- 125000003754 ethoxycarbonyl group Chemical group C(=O)(OCC)* 0.000 description 1
- ZQDADDSPMCHZPX-UHFFFAOYSA-N ethyl 4-(trifluoromethyl)benzoate Chemical compound CCOC(=O)C1=CC=C(C(F)(F)F)C=C1 ZQDADDSPMCHZPX-UHFFFAOYSA-N 0.000 description 1
- YCBJOQUNPLTBGG-UHFFFAOYSA-N ethyl 4-iodobenzoate Chemical compound CCOC(=O)C1=CC=C(I)C=C1 YCBJOQUNPLTBGG-UHFFFAOYSA-N 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 125000005928 isopropyloxycarbonyl group Chemical group [H]C([H])([H])C([H])(OC(*)=O)C([H])([H])[H] 0.000 description 1
- 125000001160 methoxycarbonyl group Chemical group [H]C([H])([H])OC(*)=O 0.000 description 1
- VAZWXPJOOFSNLB-UHFFFAOYSA-N methyl 4-(trifluoromethyl)benzoate Chemical compound COC(=O)C1=CC=C(C(F)(F)F)C=C1 VAZWXPJOOFSNLB-UHFFFAOYSA-N 0.000 description 1
- DYUWQWMXZHDZOR-UHFFFAOYSA-N methyl 4-iodobenzoate Chemical compound COC(=O)C1=CC=C(I)C=C1 DYUWQWMXZHDZOR-UHFFFAOYSA-N 0.000 description 1
- OVRBBDDZYQCMED-UHFFFAOYSA-N n,n-dimethyl-1-(6-methylpyridin-2-yl)methanamine Chemical compound CN(C)CC1=CC=CC(C)=N1 OVRBBDDZYQCMED-UHFFFAOYSA-N 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- JAMNHZBIQDNHMM-UHFFFAOYSA-N pivalonitrile Chemical compound CC(C)(C)C#N JAMNHZBIQDNHMM-UHFFFAOYSA-N 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 238000004262 preparative liquid chromatography Methods 0.000 description 1
- 238000012746 preparative thin layer chromatography Methods 0.000 description 1
- FVSKHRXBFJPNKK-UHFFFAOYSA-N propionitrile Chemical compound CCC#N FVSKHRXBFJPNKK-UHFFFAOYSA-N 0.000 description 1
- 125000001501 propionyl group Chemical group O=C([*])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004742 propyloxycarbonyl group Chemical group 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 125000005930 sec-butyloxycarbonyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(OC(*)=O)C([H])([H])[H] 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000006692 trifluoromethylation reaction Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Description
本発明は、ベンゾトリフルオリド類の製造方法に関するものである。 The present invention relates to a method for producing benzotrifluorides.
ベンゾトリフルオリド類は、医農薬や機能性材料などの製造中間体として極めて重要な化合物である。トリアルキルトリフルオロメチルシランを用いて、ハロゲン化アリールのハロゲン原子をトリフルオロメチル基で置換するベンゾトリフルオリド類の製造方法はいくつか報告されている。 Benzotrifluorides are extremely important compounds as intermediates for the production of medical pesticides and functional materials. Several methods for producing benzotrifluorides in which a halogen atom of an aryl halide is substituted with a trifluoromethyl group using trialkyltrifluoromethylsilane have been reported.
非特許文献1には、トリエチルトリフルオロメチルシランと銅塩存在下ヨウ化アリール類をトリフルオロメチル化する方法が開示されている。この方法は、化学両論量以上の銅塩を使用し、触媒量の銅塩では収率が低下することから経済的にも非効率な方法である。さらに、工業的に入手が不可能なトリエチルトリフルオロメチルシランを使用していること、反応には極性溶媒を使用しており後処理等が煩雑であることから、本方法は実用的(工業的)な方法とは言い難い。 Non-Patent Document 1 discloses a method for trifluoromethylating aryl iodides in the presence of triethyltrifluoromethylsilane and a copper salt. This method is economically inefficient because it uses a copper salt that is more than the stoichiometric amount, and the yield decreases with a catalytic amount of copper salt. Furthermore, this method is practical (industrial) because triethyltrifluoromethylsilane, which is not industrially available, is used, and a polar solvent is used for the reaction and post-treatment is complicated. It ’s hard to say.
非特許文献2には、トリエチルトリフルオロメチルシランと触媒量の塩化銅および1、10−フェナントロリン存在下ヨウ化アリール類をトリフルオロメチル化する方法が開示されている。しかしながら、本方法は工業的に入手が不可能なトリエチルトリフルオロメチルシランを使用していること、反応基質が電子吸引性基を有するヨウ化アリール類に限定されておりかつ収率が50%程度であること、さらにジメチルアセトアミド中、高温(110℃)での反応が必要としていることから、工業的製造方法としては経済性に欠ける。
本発明は、医農薬や機能性材料などの製造中間体として有用なベンゾトリフルオリド類の簡便で効率のよい経済的な製造方法を提供することにある。 An object of the present invention is to provide a simple, efficient and economical method for producing benzotrifluorides useful as intermediates for production of medicines, agricultural chemicals and functional materials.
本発明者らは、上記課題を鑑み鋭意検討を重ねた結果、トリアルキルトリフルオロメチルシラン、フッ化カリウムおよび銅塩を用いたヨードベンゼン類のトリフルオロメチル化反応が、ピリジン誘導体存在下に効率的に進行することを見出し、本発明を完成するに至った。すなわち本発明は、一般式(1) As a result of intensive studies in view of the above problems, the present inventors have found that the trifluoromethylation reaction of iodobenzenes using trialkyltrifluoromethylsilane, potassium fluoride and copper salt is efficient in the presence of a pyridine derivative. As a result, the present invention has been completed. That is, the present invention relates to the general formula (1)
[式中、R1、R2及びR3は各々独立に炭素数1から4のアルキル基を示す。]で表されるトリアルキルトリフルオロメチルシラン類を、フッ化カリウム、及び下記一般式(2) [Wherein, R 1 , R 2 and R 3 each independently represents an alkyl group having 1 to 4 carbon atoms. ] The trialkyltrifluoromethylsilanes represented by the formula: potassium fluoride and the following general formula (2)
[式中、Xはハロゲン原子または置換されていてもよい炭素数2から4のアシルオキシ基を示す。]で表される一価の銅塩存在下、一般式(3) [Wherein, X represents a halogen atom or an optionally substituted acyloxy group having 2 to 4 carbon atoms. In the presence of a monovalent copper salt represented by the general formula (3)
[式中、nは1または2を示し、Yは、水素原子、置換されていてもよい炭素数1から4のアルキル基、置換されていてもよい炭素数2から4のアルケニル基、置換されていてもよい炭素数2から4のアルキニル基、置換されていてもよい炭素数1から4のアルコキシ基、ハロゲン原子、置換されていてもよい炭素数2から5のアルコキシカルボニル基、置換されていてもよい炭素数2から5のアシル基、シアノ基またはニトロ基を示す。nが2の時、Yは同一または相異なっていてもよい。]で表されるヨードベンゼン誘導体とを反応させ、一般式(4) [Wherein n represents 1 or 2, Y represents a hydrogen atom, an optionally substituted alkyl group having 1 to 4 carbon atoms, an optionally substituted alkenyl group having 2 to 4 carbon atoms, or substituted. Optionally substituted alkynyl group having 2 to 4 carbon atoms, optionally substituted alkoxy group having 1 to 4 carbon atoms, halogen atom, optionally substituted alkoxycarbonyl group having 2 to 5 carbon atoms, substituted An acyl group having 2 to 5 carbon atoms, a cyano group or a nitro group may be used. When n is 2, Y may be the same or different. And an iodobenzene derivative represented by the general formula (4):
[式中、Yおよびnは前記と同じ内容を示す。]で表されるベンゾトリフルオリド類の製造方法において、一般式(5) [Wherein Y and n represent the same contents as described above. ] In the manufacturing method of benzotrifluoride represented by General formula (5)
[式中、R4は置換されていてもよい4,5−ジヒドロオキサゾール−2−イル基または炭素数3から7のN,N−ジアルキルアミノメチル基を示す。R5は水素原子、置換されていてもよい炭素数1から4のアルキル基、置換されていてもよい4,5−ジヒドロオキサゾール−2−イル基または炭素数3から7のN,N−ジアルキルアミノメチル基を示す。R6、R7及びR8は、各々独立に、水素原子、置換されていてもよい炭素数1から4のアルキル基、置換されていてもよい炭素数1から4のアルコキシ基、炭素数2から6のジアルキルアミノ基を示す。]で表されるピリジン誘導体の共存下でニトリル系溶媒中で反応させることを特徴とする、一般式(4)で表されるベンゾトリフルオリド類の製造方法に関するものである。以下に、本発明を詳細に説明する。 [Wherein, R 4 represents an optionally substituted 4,5-dihydrooxazol-2-yl group or an N, N-dialkylaminomethyl group having 3 to 7 carbon atoms. R 5 represents a hydrogen atom, an optionally substituted alkyl group having 1 to 4 carbon atoms, an optionally substituted 4,5-dihydrooxazol-2-yl group, or an N, N-dialkyl group having 3 to 7 carbon atoms. An aminomethyl group is shown. R 6 , R 7 and R 8 are each independently a hydrogen atom, an optionally substituted alkyl group having 1 to 4 carbon atoms, an optionally substituted alkoxy group having 1 to 4 carbon atoms, or 2 carbon atoms. To 6 dialkylamino groups. The present invention relates to a method for producing a benzotrifluoride represented by the general formula (4), characterized by reacting in a nitrile solvent in the presence of a pyridine derivative represented by the following formula: The present invention is described in detail below.
R1、R2及びR3で示される炭素数1から4のアルキル基としては、直鎖状、環状もしくは分岐状のいずれであってもよく、メチル基、エチル基、プロピル基、イソプロピル基、ブチル基、イソブチル基、sec−ブチル基、tert−ブチル基、シクロプロピル基、シクロプロピルメチル基等を例示することができる。R1、R2及びR3は収率がよい点でメチル基またはエチル基が望ましく、メチル基がさらに望ましい。 The alkyl group having 1 to 4 carbon atoms represented by R 1 , R 2 and R 3 may be linear, cyclic or branched, and includes a methyl group, an ethyl group, a propyl group, an isopropyl group, A butyl group, an isobutyl group, a sec-butyl group, a tert-butyl group, a cyclopropyl group, a cyclopropylmethyl group and the like can be exemplified. R 1 , R 2 and R 3 are preferably a methyl group or an ethyl group, and more preferably a methyl group in terms of good yield.
R5、R6、R7及びR8で示される置換されていてもよい炭素数1から4のアルキル基としては、直鎖状、環状もしくは分岐状のいずれであってもよく、メチル基、エチル基、プロピル基、イソプロピル基、ブチル基、イソブチル基、sec−ブチル基、tert−ブチル基、シクロプロピル基、シクロプロピルメチル基等を例示することができる。また、これらのアルキル基は、ハロゲン原子等で置換されていてもよく、具体的には、クロロメチル基、2−クロロエチル基、3−クロロプロピル基、ジフルオロメチル基、3−フルオロプロピル基、トリフルオロメチル基、2−フルオロエチル基、2,2,2−トリフルオロエチル基、2,2,2−トリクロロエチル基等が例示できる。 The optionally substituted alkyl group having 1 to 4 carbon atoms represented by R 5 , R 6 , R 7 and R 8 may be linear, cyclic or branched, methyl group, Examples thereof include an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, a sec-butyl group, a tert-butyl group, a cyclopropyl group, and a cyclopropylmethyl group. In addition, these alkyl groups may be substituted with a halogen atom or the like. Specifically, chloromethyl group, 2-chloroethyl group, 3-chloropropyl group, difluoromethyl group, 3-fluoropropyl group, A fluoromethyl group, 2-fluoroethyl group, 2,2,2-trifluoroethyl group, 2,2,2-trichloroethyl group and the like can be exemplified.
Yで示される置換されていてもよい炭素数1から4のアルキル基としては、直鎖状、環状もしくは分岐状のいずれであってもよく、メチル基、エチル基、プロピル基、イソプロピル基、ブチル基、イソブチル基、sec−ブチル基、tert−ブチル基、シクロプロピル基、シクロプロピルメチル基等を例示することができる。また、これらのアルキル基は、ハロゲン原子等で置換されていてもよく、具体的には、クロロメチル基、2−クロロエチル基、3−クロロプロピル基、ジフルオロメチル基、3−フルオロプロピル基、トリフルオロメチル基、2−フルオロエチル基、2,2,2−トリフルオロエチル基、2,2,2−トリクロロエチル基等が例示できる。 The optionally substituted alkyl group having 1 to 4 carbon atoms represented by Y may be linear, cyclic or branched, and is a methyl group, ethyl group, propyl group, isopropyl group, butyl Group, isobutyl group, sec-butyl group, tert-butyl group, cyclopropyl group, cyclopropylmethyl group and the like. In addition, these alkyl groups may be substituted with a halogen atom or the like. Specifically, chloromethyl group, 2-chloroethyl group, 3-chloropropyl group, difluoromethyl group, 3-fluoropropyl group, A fluoromethyl group, 2-fluoroethyl group, 2,2,2-trifluoroethyl group, 2,2,2-trichloroethyl group and the like can be exemplified.
Xで示されるハロゲン原子としては、フッ素原子、塩素原子、臭素原子またはヨウ素原子が例示できる。収率がよい点でヨウ素原子または臭素原子が望ましく、ヨウ素原子がさらに望ましい。 Examples of the halogen atom represented by X include a fluorine atom, a chlorine atom, a bromine atom or an iodine atom. An iodine atom or a bromine atom is desirable in terms of a good yield, and an iodine atom is more desirable.
Yで示されるハロゲン原子としては、フッ素原子、塩素原子、臭素原子またはヨウ素原子が例示できる。 Examples of the halogen atom represented by Y include a fluorine atom, a chlorine atom, a bromine atom and an iodine atom.
Xで示される置換されていてもよい炭素数2から4のアシルオキシ基としては、アセトキシ基、プロピオニルオキシ基、トリフルオロアセトキシ基等を例示することができる。 Examples of the optionally substituted acyloxy group having 2 to 4 carbon atoms represented by X include an acetoxy group, a propionyloxy group, a trifluoroacetoxy group, and the like.
Yで示される置換されていてもよい炭素数2から4のアルケニル基としては、ビニル基、1−プロペニル基、アリル基、2−メチル−2−プロペニル基、2−ブテニル基、3−ブテニル基等を例示することができる。また、これらのアルケニル基は、ハロゲン原子等で置換されていてもよく、具体的には、1,2,2−トリクロロビニル基、1,2,2−トリフルオロビニル基、1,1,2,3,3−ペンタクロロアリル基、1,1,2,3,3−ペンタフルオロビニル基等が例示できる。 Examples of the optionally substituted alkenyl group having 2 to 4 carbon atoms represented by Y include vinyl group, 1-propenyl group, allyl group, 2-methyl-2-propenyl group, 2-butenyl group and 3-butenyl group. Etc. can be illustrated. Further, these alkenyl groups may be substituted with a halogen atom or the like, specifically, 1,2,2-trichlorovinyl group, 1,2,2-trifluorovinyl group, 1,1,2, , 3,3-pentachloroallyl group, 1,1,2,3,3-pentafluorovinyl group and the like.
Yで示される置換されていてもよい炭素数2から4のアルキニル基としては、エチニル基、プロパルギル基、1−ブチニル基、1−ブチン−3−イル基、2−ブチニル基等を例示することができる。また、これらのアルキニル基は、ハロゲン原子等で置換されていてもよく、具体的には、1,1−ジクロプロパルギル基、1,1−ジフルオロプロパルギル基等が例示できる。 Examples of the optionally substituted alkynyl group having 2 to 4 carbon atoms represented by Y include ethynyl group, propargyl group, 1-butynyl group, 1-butyn-3-yl group, 2-butynyl group and the like. Can do. In addition, these alkynyl groups may be substituted with a halogen atom or the like, and specific examples include 1,1-dichloropropargyl group, 1,1-difluoropropargyl group and the like.
R6、R7及びR8で示される置換されていてもよい炭素数1から4のアルコキシ基としては、メトキシ基、エトキシ基、プロポキシ基、イソプロポキシ基、シクロプロポキシ基、ブトキシ基、イソブチルオキシ基、sec−ブトキシ基、tert−ブトキシ基、シクロブチルオキシ基、シクロプロピルメトキシ基等が例示できる。また、これらのアルコキシは、ハロゲン原子等で置換されていてもよく、具体的には、トリクロロメトキシ基、トリフルオロメトキシ、2,2,2−トリフルオロエトキシ基等が例示できる。 Examples of the optionally substituted alkoxy group represented by R 6 , R 7 and R 8 include methoxy group, ethoxy group, propoxy group, isopropoxy group, cyclopropoxy group, butoxy group, isobutyloxy Group, sec-butoxy group, tert-butoxy group, cyclobutyloxy group, cyclopropylmethoxy group and the like. These alkoxys may be substituted with a halogen atom or the like, and specific examples include a trichloromethoxy group, trifluoromethoxy, 2,2,2-trifluoroethoxy group and the like.
Yで示される置換されていてもよい炭素数1から4のアルコキシ基としては、メトキシ基、エトキシ基、プロポキシ基、イソプロポキシ基、シクロプロポキシ基、ブトキシ基、イソブチルオキシ基、sec−ブトキシ基、tert−ブトキシ基、シクロブチルオキシ基、シクロプロピルメトキシ基等が例示できる。また、これらのアルコキシ基は、ハロゲン原子等で置換されていてもよく、具体的には、トリクロロメトキシ基、トリフルオロメトキシ、2,2,2−トリフルオロエトキシ基等が例示できる。 Examples of the optionally substituted alkoxy group having 1 to 4 carbon atoms represented by Y include methoxy group, ethoxy group, propoxy group, isopropoxy group, cyclopropoxy group, butoxy group, isobutyloxy group, sec-butoxy group, Examples thereof include a tert-butoxy group, a cyclobutyloxy group, and a cyclopropylmethoxy group. In addition, these alkoxy groups may be substituted with a halogen atom or the like, and specific examples include a trichloromethoxy group, trifluoromethoxy, 2,2,2-trifluoroethoxy group, and the like.
Yで示される置換されていてもよい炭素数2から5のアルコキシカルボニル基としては、メトキシカルボニル基、エトキシカルボニル基、プロポキシカルボニル基、イソプロポキシカルボニル基、ブトキシカルボニル基、sec−ブトキシカルボニル基、tert−ブトキシカルボニル基等を例示することができる。また、これらのアルコキシカルボニル基は、ハロゲン原子等で置換されていてもよく、具体的には、2,2,2−トリクロロエトキシカルボニル基、2,2,2−トリフルオロエトキシカルボニル基等が例示できる。 Examples of the optionally substituted alkoxycarbonyl group having 2 to 5 carbon atoms represented by Y include methoxycarbonyl group, ethoxycarbonyl group, propoxycarbonyl group, isopropoxycarbonyl group, butoxycarbonyl group, sec-butoxycarbonyl group, tert -A butoxycarbonyl group etc. can be illustrated. In addition, these alkoxycarbonyl groups may be substituted with a halogen atom or the like, and specifically, 2,2,2-trichloroethoxycarbonyl group, 2,2,2-trifluoroethoxycarbonyl group and the like are exemplified. it can.
Yで示される置換されていてもよい炭素数2から5のアシル基としては、アセチル基、プロピオニル基、ピバロイル基等を例示することができる。また、これらのアシル基は、ハロゲン原子等で置換されていてもよく、具体的には、2,2,2−トリクロロアセチル基、2,2,2−トリフルオロアセチル基、3,3,3−トリフルオロプロピオニル基等が例示できる。 Examples of the optionally substituted acyl group having 2 to 5 carbon atoms represented by Y include an acetyl group, a propionyl group, and a pivaloyl group. These acyl groups may be substituted with a halogen atom or the like. Specifically, 2,2,2-trichloroacetyl group, 2,2,2-trifluoroacetyl group, 3,3,3 -A trifluoropropionyl group etc. can be illustrated.
R4及びR5で示される置換されていてもよい4,5−ジヒドロオキサゾール−2−イル基の置換基としては、炭素数1から4のアルキル基、置換されていてもよいフェニル基等を例示することができる。具体的には、4,5−ジヒドロオキサゾール−2−イル基、4−イソプロピル−4,5−ジヒドロオキサゾール−2−イル基、4,4−ジメチル−4,5−ジヒドロオキサゾール−2−イル基、4−フェニル−4,5−ジヒドロオキサゾール−2−イル基、4−tert−ブチル−4,5−ジヒドロオキサゾール−2−イル基、4−メチル−5−フェニル−4,5−ジヒドロオキサゾール−2−イル基等を例示することができる。収率がよい点で、4−フェニル−4,5−ジヒドロオキサゾール−2−イル基が望ましい。 Examples of the substituent of the optionally substituted 4,5-dihydrooxazol-2-yl group represented by R 4 and R 5 include an alkyl group having 1 to 4 carbon atoms and an optionally substituted phenyl group. It can be illustrated. Specifically, 4,5-dihydrooxazol-2-yl group, 4-isopropyl-4,5-dihydrooxazol-2-yl group, 4,4-dimethyl-4,5-dihydrooxazol-2-yl group 4-phenyl-4,5-dihydrooxazol-2-yl group, 4-tert-butyl-4,5-dihydrooxazol-2-yl group, 4-methyl-5-phenyl-4,5-dihydrooxazole- A 2-yl group etc. can be illustrated. A 4-phenyl-4,5-dihydrooxazol-2-yl group is desirable in terms of good yield.
R4及びR5で示される炭素数3から7で示されるN,N−ジアルキルアミノメチル基としては、直鎖状、環状もしくは分岐状のいずれであってもよく、N,N−ジメチルアミノメチル基、N,N−ジエチルアミノメチル基、N,N−ジプロピルアミノメチル基、N,N−ジイソプロピルアミノメチル基、ピロリジン−1−イルメチル基、ピペリジン−1−イルメチル基等を例示することができる。収率がよい点でN,N−ジメチルアミノメチル基が望ましい。 The N, N-dialkylaminomethyl group having 3 to 7 carbon atoms represented by R 4 and R 5 may be linear, cyclic or branched, and N, N-dimethylaminomethyl Group, N, N-diethylaminomethyl group, N, N-dipropylaminomethyl group, N, N-diisopropylaminomethyl group, pyrrolidin-1-ylmethyl group, piperidin-1-ylmethyl group and the like can be exemplified. N, N-dimethylaminomethyl group is desirable in terms of good yield.
R6、R7及びR8で示される炭素数2から6のジアルキルアミノ基としては、N,N−ジメチルアミノ基、N,N−ジエチルアミノ基、N,N−ジプロピルアミノ基、N,N−ジイソプロピルアミノ基等を例示することができる。 Examples of the dialkylamino group having 2 to 6 carbon atoms represented by R 6 , R 7 and R 8 include N, N-dimethylamino group, N, N-diethylamino group, N, N-dipropylamino group, N, N -A diisopropylamino group etc. can be illustrated.
ピリジン誘導体(5)として、2,6−ビス(4−フェニル−4,5−ジヒドロオキサゾール−2−イル)ピリジン、2−(N,N−ジメチルアミノメチル)ピリジン、2−(N,N−ジメチルアミノメチル)−6−メチルピリジン、2,6−ビス(N,N−ジメチルアミノメチル)ピリジンを用いることが望ましい。 As the pyridine derivative (5), 2,6-bis (4-phenyl-4,5-dihydrooxazol-2-yl) pyridine, 2- (N, N-dimethylaminomethyl) pyridine, 2- (N, N- It is desirable to use dimethylaminomethyl) -6-methylpyridine and 2,6-bis (N, N-dimethylaminomethyl) pyridine.
Yとして、電子求引性置換基を用いることが望ましい。具体的には、ニトロ基、シアノ基、アルコキシカルボニル基、トリフルオロメチル基を例示できる。 It is desirable to use an electron withdrawing substituent as Y. Specific examples include a nitro group, a cyano group, an alkoxycarbonyl group, and a trifluoromethyl group.
次に、本発明の製造方法について、詳しく述べる。 Next, the production method of the present invention will be described in detail.
本発明の原料であるトリアルキルトリフルオロメチルシラン(1)は一部市販されているが、文献記載の方法またはそれに準じた方法により調製することができる。(非特許文献−3)。
本反応はニトリル系溶媒中で行うことが必須であり、アセトニトリル、プロピオニトリル、ブチロニトリル、ピバロニトリル等のニトリル系溶媒を例示でき、上記の溶媒のうち2種類以上を混合しても差し支えない。収率がよい点で、アセトニトリルを用いることが望ましい。ニトリル系溶媒中で反応を行うと、従来法より温和な条件で収率よく目的物が得られる。非特許文献2に開示されているジメチルアセトアミド中で本製造工程を行うと、収率の極端な低下が起こることより、本願の製造方法は、温和な条件で反応目的物を効率的に得られる製造方法と言える(比較例2−3参照。)
ヨードベンゼン誘導体(3)とトリアルキルトリフルオロメチルシラン(1)とのモル比は、1:1から1:10が望ましく、収率がよい点で1:1から1:2がさらに望ましい。
This reaction is essential to be performed in a nitrile solvent, and examples thereof include nitrile solvents such as acetonitrile, propionitrile, butyronitrile, and pivalonitrile, and two or more of the above solvents may be mixed. It is desirable to use acetonitrile in terms of a good yield. When the reaction is carried out in a nitrile solvent, the desired product can be obtained in good yield under milder conditions than the conventional method. When this production process is carried out in dimethylacetamide disclosed in Non-Patent Document 2, an extremely low yield occurs, so that the production method of the present application can efficiently obtain the reaction target product under mild conditions. It can be said to be a production method (see Comparative Example 2-3).
The molar ratio of the iodobenzene derivative (3) to the trialkyltrifluoromethylsilane (1) is preferably 1: 1 to 1:10, and more preferably 1: 1 to 1: 2 in terms of a good yield.
ヨードベンゼン誘導体(3)とフッ化カリウムとのモル比は、1:1から1:10が望ましく、収率がよい点で1:1から1:2がさらに望ましい。 The molar ratio of the iodobenzene derivative (3) and potassium fluoride is preferably 1: 1 to 1:10, and more preferably 1: 1 to 1: 2 in terms of a good yield.
ヨードベンゼン誘導体(3)と銅塩(2)とのモル比は、1:1から1:0.01が望ましく、収率がよい点で1:0.2から1:0.01がさらに望ましい。 The molar ratio of the iodobenzene derivative (3) to the copper salt (2) is preferably 1: 1 to 1: 0.01, and more preferably 1: 0.2 to 1: 0.01 in terms of a good yield. .
ヨードベンゼン誘導体(3)とピリジン誘導体(5)とのモル比は、1:1から1:0.01が望ましく、収率がよい点で1:0.2から1:0.01がさらに望ましい。本製造方法においてピリジン誘導体(5)の使用は必須条件である。非特許文献2に開示されている1、10−フェナントロリンと比して、ピリジン誘導体(5)を使用する本願の製造方法は、反応の条件が温和であり、目的物の収率が上昇することから効率的な製造方法と言える(比較例1参照)。また、非特許文献2に開示されている、アセトアミド溶媒中、1,10−フェナントロリンを使用するという溶媒−リガンドの組み合わせに比して、本願のニトリル系溶媒中、ピリジン誘導体を使用するという溶媒−リガンドの組み合わせは、温和な条件で反応目的物を効率的に得られる製造方法と言える(比較例4−5参照。) The molar ratio of the iodobenzene derivative (3) and the pyridine derivative (5) is preferably 1: 1 to 1: 0.01, and more preferably 1: 0.2 to 1: 0.01 in terms of a good yield. . In this production method, use of the pyridine derivative (5) is an essential condition. Compared with 1,10-phenanthroline disclosed in Non-Patent Document 2, the production method of the present application using the pyridine derivative (5) has mild reaction conditions and increases the yield of the target product. Therefore, it can be said that the production method is efficient (see Comparative Example 1). Further, as compared to the solvent-ligand combination disclosed in Non-Patent Document 2 that uses 1,10-phenanthroline in an acetamide solvent, a solvent that uses a pyridine derivative in the nitrile solvent of the present application- The combination of the ligands can be said to be a production method capable of efficiently obtaining the reaction target product under mild conditions (see Comparative Example 4-5).
反応温度は、0℃から100℃の範囲から適宜選ばれた温度で行うことができる。収率がよい点で20℃以上から80℃の範囲が望ましい。 The reaction temperature can be carried out at a temperature appropriately selected from the range of 0 ° C to 100 ° C. A range from 20 ° C. to 80 ° C. is desirable in terms of a good yield.
反応は、大気圧(0.1MPa)から1.0MPaの範囲から適宜選ばれた圧力で行うことができるが、大気圧でも反応は充分に進行する。また、反応の際の雰囲気は、アルゴン、窒素等の不活性ガスでもよいが、空気中でも充分に進行する。 The reaction can be performed at a pressure appropriately selected from the range of atmospheric pressure (0.1 MPa) to 1.0 MPa, but the reaction proceeds sufficiently even at atmospheric pressure. The atmosphere during the reaction may be an inert gas such as argon or nitrogen, but proceeds sufficiently even in air.
反応後の溶液から目的物を単離する方法に特に限定はないが、溶媒抽出、カラムクロマトグラフィー、分取薄層クロマトグラフィー、分取液体クロマトグラフィー、再結晶または昇華等の汎用的な方法で目的物を得ることができる。 The method for isolating the target product from the solution after the reaction is not particularly limited, but may be a general method such as solvent extraction, column chromatography, preparative thin layer chromatography, preparative liquid chromatography, recrystallization or sublimation. The object can be obtained.
本発明は、医農薬や機能性材料などの製造中間体として有用なベンゾトリフルオリド類を効率よく製造する方法として有効である。 INDUSTRIAL APPLICABILITY The present invention is effective as a method for efficiently producing benzotrifluorides useful as production intermediates for medicines, agricultural chemicals and functional materials.
次に本発明を実施例によって詳細に説明するが、本発明はこれらに限定されるものではない。 EXAMPLES Next, although an Example demonstrates this invention in detail, this invention is not limited to these.
(実施例1)
パイレックス(登録商標)管(7ml)に4−ニトロヨードベンゼン(249mg、1.0mmol)、フッ化カリウム(58mg、1.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)および2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.1mmol)のアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量により、4−ニトロベンゾトリフルオリド(生成率89%)の生成を確認した。反応混合物に水(2.0ml)を入れ、酢酸エチル(4.0ml×3)にて抽出した。有機層を合わせて、水(2ml)と飽和塩化ナトリウム水溶液(2ml)にて順次洗浄し、乾燥後、ろ液を減圧濃縮した。得られた油状物を中圧シリカゲルカラムクロマトグラフィー(ヘキサン−酢酸エチル)により精製することにより、4−ニトロベンゾトリフルオリド(158mg、生成率83%)を無色粉末として得た。
1H−NMR(250MHz,CDCl3)δ8.37(d,J=7.5Hz,2H),7.85(d,J=7.5Hz,2H).
19F−NMR(235MHz,CDCl3)δ−63.4.
GCEIMSm/z(intensity):75(15),95(28),125(17),133(18),145(100),191(45).
4-pyreiodobenzene (249 mg, 1.0 mmol) and potassium fluoride (58 mg, 1.0 mmol) were weighed into a Pyrex (registered trademark) tube (7 ml), and the system was placed in an argon atmosphere. A solution of (19 mg, 0.1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.1 mmol) in acetonitrile (2.0 ml) was added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. The production of 4-nitrobenzotrifluoride (production rate 89%) was confirmed by the molecular weight obtained by 19 F-NMR and GCEIMS in which the internal standard was α, α, α-trifluorotoluene. Water (2.0 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (4.0 ml × 3). The organic layers were combined, washed successively with water (2 ml) and saturated aqueous sodium chloride solution (2 ml), dried, and the filtrate was concentrated under reduced pressure. The obtained oil was purified by medium pressure silica gel column chromatography (hexane-ethyl acetate) to give 4-nitrobenzotrifluoride (158 mg, yield 83%) as a colorless powder.
1 H-NMR (250 MHz, CDCl 3 ) δ 8.37 (d, J = 7.5 Hz, 2H), 7.85 (d, J = 7.5 Hz, 2H).
19 F-NMR (235 MHz, CDCl 3 ) δ-63.4.
GCEIMS m / z (intensity): 75 (15), 95 (28), 125 (17), 133 (18), 145 (100), 191 (45).
(実施例2)
パイレックス管(7ml)に4−ニトロヨードベンゼン(249mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)および2−(N,N−ジメチルアミノメチル)ピリジン(19.3mg、0.1mmol)のアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量により、4−ニトロベンゾトリフルオリド(生成率85%)の生成を確認した。 To a Pyrex tube (7 ml), 4-nitroiodobenzene (249 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed, and the system was placed in an argon atmosphere, and then copper iodide (19 mg, 0 mmol) was measured. 0.1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (19.3 mg, 0.1 mmol) in acetonitrile (2.0 ml) were added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. The production of 4-nitrobenzotrifluoride (production rate: 85%) was confirmed by 19 F-NMR with an internal standard of α, α, α-trifluorotoluene and the molecular weight obtained by GCEIMS.
(実施例3)
パイレックス管(7ml)に4−ニトロヨードベンゼン(249mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)、ヨウ化銅(19.0mg、0.10mmol)および2,6−ビス[(4R,5R)−4−メチル−5−フェニル−2−オキサゾリニル]ピリジン(39.7mg、0.10mmol)を量り取り、系内をアルゴン雰囲気下とした。これにアセトニトリル(2.0ml)を加え、室温にて5分間攪拌した後、この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量により、4−ニトロベンゾトリフルオリド(生成率87%)の生成を確認した。 Pyrex tube (7 ml) was charged with 4-nitroiodobenzene (249 mg, 1.0 mmol), potassium fluoride (116 mg, 2.0 mmol), copper iodide (19.0 mg, 0.10 mmol) and 2,6-bis [( 4R, 5R) -4-methyl-5-phenyl-2-oxazolinyl] pyridine (39.7 mg, 0.10 mmol) was weighed and the system was placed under an argon atmosphere. Acetonitrile (2.0 ml) was added thereto, and the mixture was stirred at room temperature for 5 minutes. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), sealed, and stirred at 60 ° C. for 24 hours. did. Formation of 4-nitrobenzotrifluoride (production rate: 87%) was confirmed by molecular weight obtained by 19 F-NMR and GCEIMS using α, α, α-trifluorotoluene as an internal standard.
(実施例4)
パイレックス管(7ml)に4−ニトロヨードベンゼン(249mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)、ヨウ化銅(19.0mg、0.10mmol)および2,6−ビス[(4R)−4−フェニル−2−オキサゾリニル]ピリジン(36.9mg、0.10mmol)を量り取り、系内をアルゴン雰囲気下とした。これにアセトニトリル(2.0ml)を加え、室温にて5分間攪拌した後、この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量により、4−ニトロベンゾトリフルオリド(生成率85%)の生成を確認した。 Pyrex tube (7 ml) was charged with 4-nitroiodobenzene (249 mg, 1.0 mmol), potassium fluoride (116 mg, 2.0 mmol), copper iodide (19.0 mg, 0.10 mmol) and 2,6-bis [( 4R) -4-phenyl-2-oxazolinyl] pyridine (36.9 mg, 0.10 mmol) was weighed and the system was placed under an argon atmosphere. Acetonitrile (2.0 ml) was added thereto, and the mixture was stirred at room temperature for 5 minutes. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), sealed, and stirred at 60 ° C. for 24 hours. did. The production of 4-nitrobenzotrifluoride (production rate: 85%) was confirmed by 19 F-NMR with an internal standard of α, α, α-trifluorotoluene and the molecular weight obtained by GCEIMS.
(実施例5)
パイレックス管(7ml)に4−ヨードベンゾニトリル(229mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)および2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.1mmol)のアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。反応混合物に水(2.0ml)を入れ、酢酸エチル(4.0ml×3)にて抽出した。有機層を合わせて、水(2ml)と飽和塩化ナトリウム水溶液(2ml)にて順次洗浄し、乾燥後、ろ液を減圧濃縮した。得られた油状物を中圧シリカゲルカラムクロマトグラフィー(ヘキサン−酢酸エチル)により精製することにより、4−シアノベンゾトリフルオリド(132mg、生成率77%)を無色粉末として得た。
1H−NMR(250MHz,CDCl3)δ7.82(d,J=8.5Hz,2H), 7.76(d,J=8.5Hz,2H).
19F−NMR(235MHz,CDCl3)δ−63.8.
GCEIMSm/z(intensity):75(14),121(60),152(44),171(100).
4-Iodobenzonitrile (229 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed into a Pyrex tube (7 ml), and the inside of the system was put under an argon atmosphere, and then copper iodide (19 mg, 0 mmol) was obtained. 0.1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.1 mmol) in acetonitrile (2.0 ml) were added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. Water (2.0 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (4.0 ml × 3). The organic layers were combined, washed successively with water (2 ml) and saturated aqueous sodium chloride solution (2 ml), dried, and the filtrate was concentrated under reduced pressure. The obtained oil was purified by medium pressure silica gel column chromatography (hexane-ethyl acetate) to give 4-cyanobenzotrifluoride (132 mg, yield 77%) as a colorless powder.
1 H-NMR (250 MHz, CDCl 3 ) δ 7.82 (d, J = 8.5 Hz, 2H), 7.76 (d, J = 8.5 Hz, 2H).
19 F-NMR (235 MHz, CDCl 3 ) δ-63.8.
GCEIMS m / z (intensity): 75 (14), 121 (60), 152 (44), 171 (100).
(実施例6)
パイレックス管(7ml)に4−ヨード安息香酸メチル(262mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)および2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.1mmol)のアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。反応混合物に水(2.0ml)を入れ、酢酸エチル(4.0ml×3)にて抽出した。有機層を合わせて、水(2ml)と飽和塩化ナトリウム水溶液(2ml)にて順次洗浄し、乾燥後、ろ液を減圧濃縮した。得られた油状物を中圧シリカゲルカラムクロマトグラフィー(ヘキサン−酢酸エチル)により精製することにより、4−(メトキシカルボニル)ベンゾトリフルオリド(132mg、生成率65%)を無色油状物として得た。
1H−NMR(250MHz,CDCl3)δ8.16(d,J=8.0Hz,2H),7.71(d,J=8.0Hz,2H),3.96(s,3H).
19F−NMR(235MHz,CDCl3)δ−63.4.
GCEIMSm/z(intensity):75(6),95(10),125(7),145(63),173(100),204(22).
Methyl 4-iodobenzoate (262 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed into a Pyrex tube (7 ml), and the inside of the system was placed in an argon atmosphere, and then copper iodide (19 mg, 0.1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.1 mmol) in acetonitrile (2.0 ml) were added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. Water (2.0 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (4.0 ml × 3). The organic layers were combined, washed successively with water (2 ml) and saturated aqueous sodium chloride solution (2 ml), dried, and the filtrate was concentrated under reduced pressure. The obtained oil was purified by medium pressure silica gel column chromatography (hexane-ethyl acetate) to give 4- (methoxycarbonyl) benzotrifluoride (132 mg, yield 65%) as a colorless oil.
1 H-NMR (250 MHz, CDCl 3 ) δ 8.16 (d, J = 8.0 Hz, 2H), 7.71 (d, J = 8.0 Hz, 2H), 3.96 (s, 3H).
19 F-NMR (235 MHz, CDCl 3 ) δ-63.4.
GCEIMS m / z (intensity): 75 (6), 95 (10), 125 (7), 145 (63), 173 (100), 204 (22).
(実施例7)
パイレックス管(7ml)に4−ヨード安息香酸エチル(276mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)および2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.1mmol)のアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。反応混合物に水(2.0ml)を入れ、酢酸エチル(4.0ml×3)にて抽出した。有機層を合わせて、水(2ml)と飽和塩化ナトリウム水溶液(2ml)にて順次洗浄し、乾燥後、ろ液を減圧濃縮した。得られた油状物を中圧シリカゲルカラムクロマトグラフィー(ヘキサン−酢酸エチル)により精製することにより、4−(エトキシカルボニル)ベンゾトリフルオリド(132mg、生成率60%)を無色油状物として得た。
1H−NMR(250MHz,CDCl3)δ8.16(d,J=8.0Hz,2H),7.68(d,J=8.0Hz,2H),4.42(q,J=7.3Hz,2H),1.42(t,J=7.3Hz,3H).
19F−NMR(235MHz,CDCl3)δ−63.4.
GCEIMSm/z(intensity):95(9.7),145(60),173(100),190(38),218(13).
To a Pyrex tube (7 ml), ethyl 4-iodobenzoate (276 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed, and the inside of the system was placed in an argon atmosphere. Then, copper iodide (19 mg, 0.1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.1 mmol) in acetonitrile (2.0 ml) were added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. Water (2.0 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (4.0 ml × 3). The organic layers were combined, washed successively with water (2 ml) and saturated aqueous sodium chloride solution (2 ml), dried, and the filtrate was concentrated under reduced pressure. The obtained oil was purified by medium pressure silica gel column chromatography (hexane-ethyl acetate) to give 4- (ethoxycarbonyl) benzotrifluoride (132 mg, yield 60%) as a colorless oil.
1 H-NMR (250 MHz, CDCl 3 ) δ 8.16 (d, J = 8.0 Hz, 2H), 7.68 (d, J = 8.0 Hz, 2H), 4.42 (q, J = 7. 3 Hz, 2H), 1.42 (t, J = 7.3 Hz, 3H).
19 F-NMR (235 MHz, CDCl 3 ) δ-63.4.
GCEIMS m / z (intensity): 95 (9.7), 145 (60), 173 (100), 190 (38), 218 (13).
(実施例8)
パイレックス管(7ml)に3−ニトロヨードベンゼン(249mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)および2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.1mmol)のアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量と保持時間を、市販の標準試料と比較することにより、3−ニトロベンゾトリフルオリド(生成率68%)の生成を確認した。反応混合物に水(2.0ml)を入れ、酢酸エチル(4.0ml×3)にて抽出した。有機層を合わせて、水(2ml)と飽和塩化ナトリウム水溶液(2ml)にて順次洗浄し、乾燥後、ろ液を減圧濃縮した。得られた油状物を中圧シリカゲルカラムクロマトグラフィー(ヘキサン−酢酸エチル)により精製することにより、3−ニトロベンゾトリフルオリド(115mg、生成率60%)を無色油状物として得た。
1H−NMR(250MHz,CDCl3)δ8.25(brs,1H),8.45(brd,J=8.0Hz,1H),7.98(d,J=8.0Hz,1H),7.74(dd,J=8.0,8.0Hz,1H).
19F−NMR(235MHz,CDCl3)δ−63.2.
GCEIMSm/z(intensity):75(16),95(28),125(16),133(11),145(100),191(43).
3-Nitroiodobenzene (249 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed into a Pyrex tube (7 ml), and the inside of the system was placed in an argon atmosphere, and then copper iodide (19 mg, 0 mmol) was obtained. 0.1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.1 mmol) in acetonitrile (2.0 ml) were added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. By comparing the molecular weight and retention time obtained by 19 F-NMR and GCEIIMS with α, α, α-trifluorotoluene as the internal standard, by comparing with a commercially available standard sample, 3-nitrobenzotrifluoride (production rate 68 %) Was confirmed. Water (2.0 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (4.0 ml × 3). The organic layers were combined, washed successively with water (2 ml) and saturated aqueous sodium chloride solution (2 ml), dried, and the filtrate was concentrated under reduced pressure. The obtained oil was purified by medium pressure silica gel column chromatography (hexane-ethyl acetate) to give 3-nitrobenzotrifluoride (115 mg, yield 60%) as a colorless oil.
1 H-NMR (250 MHz, CDCl 3 ) δ 8.25 (brs, 1H), 8.45 (brd, J = 8.0 Hz, 1H), 7.98 (d, J = 8.0 Hz, 1H), 7 .74 (dd, J = 8.0, 8.0 Hz, 1H).
19 F-NMR (235 MHz, CDCl 3 ) δ-63.2.
GCEIMS m / z (intensity): 75 (16), 95 (28), 125 (16), 133 (11), 145 (100), 191 (43).
(実施例9)
パイレックス管(7ml)に3−ニトロヨードベンゼン(249mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)、2−(N,N−ジメチルアミノメチル)−6−メチルピリジン(15.0mg、0.10mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19.0mg、0.10mmol)のアセトニトリル溶液(2.0ml)を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量により、3−ニトロベンゾトリフルオリド(生成率46%)の生成を確認した。 Pyrex tube (7 ml) was charged with 3-nitroiodobenzene (249 mg, 1.0 mmol), potassium fluoride (116 mg, 2.0 mmol), 2- (N, N-dimethylaminomethyl) -6-methylpyridine (15.0 mg). , 0.10 mmol) was weighed and the inside of the system was placed in an argon atmosphere, and then an acetonitrile solution (2.0 ml) of copper iodide (19.0 mg, 0.10 mmol) was added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. The production of 3-nitrobenzotrifluoride (production rate 46%) was confirmed by the molecular weight obtained by 19 F-NMR and GCEIMS using α, α, α-trifluorotoluene as the internal standard.
(実施例10)
パイレックス管(7ml)に3−ニトロヨードベンゼン(249mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)と2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.1mmol)を溶かしたアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後40℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量と保持時間を、市販の標準試料と比較することにより、3−ニトロベンゾトリフルオリド(生成率35%)の生成を確認した。 3-Nitroiodobenzene (249 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed into a Pyrex tube (7 ml), and the inside of the system was placed in an argon atmosphere, and then copper iodide (19 mg, 0 mmol) was obtained. 0.1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.1 mmol) in acetonitrile (2.0 ml) was added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 40 ° C. for 24 hours. By comparing the molecular weight and retention time obtained by 19 F-NMR and GCEIMS with α, α, α-trifluorotoluene as the internal standard, by comparing with a commercially available standard sample, 3-nitrobenzotrifluoride (productivity 35 %) Was confirmed.
(実施例11)
パイレックス管(7ml)に3−ニトロヨードベンゼン(249mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)と2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.1mmol)を溶かしたアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.60ml、4.0mmol)を添加し、密封後40℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量と保持時間を、市販の標準試料と比較することにより、3−ニトロベンゾトリフルオリド(生成率17%)の生成を確認した。 3-Nitroiodobenzene (249 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed into a Pyrex tube (7 ml), and the inside of the system was placed in an argon atmosphere, and then copper iodide (19 mg, 0 mmol) was obtained. 0.1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.1 mmol) in acetonitrile (2.0 ml) was added. To this solution was added trifluoromethyltrimethylsilane (0.60 ml, 4.0 mmol), and after sealing, the mixture was stirred at 40 ° C. for 24 hours. By comparing the molecular weight and retention time obtained by 19 F-NMR and GCEIMS with α, α, α-trifluorotoluene as the internal standard, by comparing with a commercially available standard sample, 3-nitrobenzotrifluoride (production rate 17 %) Was confirmed.
(実施例12)
パイレックス管(7ml)に3−ニトロヨードベンゼン(249mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)と2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.1mmol)を溶かしたアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.60ml、4.0mmol)を添加し、密封後80℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量と保持時間を、市販の標準試料と比較することにより、3−ニトロベンゾトリフルオリド(生成率64%)の生成を確認した。 3-Nitroiodobenzene (249 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed into a Pyrex tube (7 ml), and the inside of the system was placed in an argon atmosphere, and then copper iodide (19 mg, 0 mmol) was obtained. 0.1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.1 mmol) in acetonitrile (2.0 ml) was added. To this solution was added trifluoromethyltrimethylsilane (0.60 ml, 4.0 mmol), and after sealing, the mixture was stirred at 80 ° C. for 24 hours. By comparing the molecular weight and retention time obtained by 19 F-NMR and GCEIIMS with α, α, α-trifluorotoluene as the internal standard, by comparing with a commercially available standard sample, 3-nitrobenzotrifluoride (production rate 64 %) Was confirmed.
(実施例13)
パイレックス管(7ml)に3−ニトロヨードベンゼン(249mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)と2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.1mmol)を溶かしたアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後80℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量と保持時間を、市販の標準試料と比較することにより、3−ニトロベンゾトリフルオリド(生成率56%)の生成を確認した。 3-Nitroiodobenzene (249 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed into a Pyrex tube (7 ml), and the inside of the system was placed in an argon atmosphere, and then copper iodide (19 mg, 0 mmol) was obtained. 0.1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.1 mmol) in acetonitrile (2.0 ml) was added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 80 ° C. for 24 hours. By comparing the molecular weight and retention time obtained by 19 F-NMR and GCEIMS with α, α, α-trifluorotoluene as the internal standard, by comparing with a commercially available standard sample, 3-nitrobenzotrifluoride (production rate 56 %) Was confirmed.
(実施例14)
パイレックス管(7ml)に3−ニトロヨードベンゼン(249mg、1.0mmol)、フッ化カリウム(58.0mg、1.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)と2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.1mmol)を溶かしたアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.15ml、1.0mmol)を添加し、密封後80℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量と保持時間を、市販の標準試料と比較することにより、3−ニトロベンゾトリフルオリド(生成率43%)の生成を確認した。 Pyrex tube (7 ml) was weighed with 3-nitroiodobenzene (249 mg, 1.0 mmol) and potassium fluoride (58.0 mg, 1.0 mmol), and the system was placed in an argon atmosphere, and then copper iodide (19 mg 0.1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.1 mmol) dissolved in acetonitrile (2.0 ml) was added. To this solution was added trifluoromethyltrimethylsilane (0.15 ml, 1.0 mmol), and after sealing, the mixture was stirred at 80 ° C. for 24 hours. By comparing the molecular weight and retention time obtained by 19 F-NMR and GCEIIMS with α, α, α-trifluorotoluene as the internal standard, 3-nitrobenzotrifluoride (productivity 43 %) Was confirmed.
(実施例15)
パイレックス管(7ml)に4−クロロヨードベンゼン(238mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)および2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.1mmol)のアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量と保持時間を、市販の標準試料と比較することにより、4−クロロベンゾトリフルオリド(生成率35%)の生成を確認した。
19F−NMR(250MHz,CDCl3):δ−62.9.
GCEIMSm/z(intensity):75(18),130(27),145(63),161(43),163(13),180(100),182(32).
To a Pyrex tube (7 ml), 4-chloroiodobenzene (238 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed, and the inside of the system was placed in an argon atmosphere, and then copper iodide (19 mg, 0 mmol) was obtained. 0.1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.1 mmol) in acetonitrile (2.0 ml) were added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. By comparing the molecular weight and retention time obtained by 19 F-NMR and GCEIMS with α, α, α-trifluorotoluene as the internal standard, by comparing with a commercially available standard sample, 4-chlorobenzotrifluoride (productivity 35 %) Was confirmed.
19 F-NMR (250 MHz, CDCl 3 ): δ-62.9.
GCEIMS m / z (intensity): 75 (18), 130 (27), 145 (63), 161 (43), 163 (13), 180 (100), 182 (32).
(実施例16)
パイレックス管(7ml)に4−フルオロヨードベンゼン(222mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)および2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.1mmol)のアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量と保持時間を、市販の標準試料と比較することにより、4−フルオロベンゾトリフルオリド(生成率16%)の生成を確認した。
19F−NMR(250MHz,CDCl3):δ−62.3.
GCEIMSm/z(intensity):75(17),95(13),114(61),145(100),163(25),164(91).
4-Fluoroiodobenzene (222 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed into a Pyrex tube (7 ml), and the inside of the system was placed in an argon atmosphere, followed by copper iodide (19 mg, 0 0.1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.1 mmol) in acetonitrile (2.0 ml) were added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. By comparing the molecular weight and retention time obtained by 19 F-NMR and GCEIIMS with α, α, α-trifluorotoluene as an internal standard, by comparing with a commercially available standard sample, 4-fluorobenzotrifluoride (production rate 16 %) Was confirmed.
19 F-NMR (250 MHz, CDCl 3 ): δ-62.3.
GCEIMS m / z (intensity): 75 (17), 95 (13), 114 (61), 145 (100), 163 (25), 164 (91).
(実施例17)
パイレックス管(7ml)に4−ヨードベンゾトリフルオリド(238mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)および2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.1mmol)のアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRで市販の標準試料と比較することにより、1、4−ビス(トリフルオロメチル)ベンゼン(生成率36%)の生成を確認した。
19F−NMR(250MHz,CDCl3):δ−63.5.
4-Iodobenzotrifluoride (238 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed into a Pyrex tube (7 ml), and the inside of the system was placed in an argon atmosphere, and then copper iodide (19 mg, 0.1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.1 mmol) in acetonitrile (2.0 ml) were added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. The production of 1,4-bis (trifluoromethyl) benzene (production rate 36%) was confirmed by comparison with a commercially available standard sample by 19 F-NMR in which the internal standard was α, α, α-trifluorotoluene. did.
19 F-NMR (250 MHz, CDCl 3 ): δ-63.5.
(実施例18)
パイレックス管(7ml)に2−ニトロヨードベンゼン(249mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)および2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.1mmol)のアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量により、2−ニトロベンゾトリフルオリド(生成率63%)の生成を確認した。
19F−NMR(250MHz,CDCl3):δ−60.3.
GCEIMSm/z(intensity):75(13),95(34),125(18),133(22),145(100),161(12),191(33).
To a Pyrex tube (7 ml), 2-nitroiodobenzene (249 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed, and the system was placed in an argon atmosphere, and then copper iodide (19 mg, 0 mmol) was obtained. 0.1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.1 mmol) in acetonitrile (2.0 ml) were added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. The production of 2-nitrobenzotrifluoride (production rate 63%) was confirmed by the molecular weight obtained by 19 F-NMR and GCEIMS using α, α, α-trifluorotoluene as an internal standard.
19 F-NMR (250 MHz, CDCl 3 ): δ-60.3.
GCEIMS m / z (intensity): 75 (13), 95 (34), 125 (18), 133 (22), 145 (100), 161 (12), 191 (33).
(実施例19)
パイレックス管(7ml)に4−ヨードアセトフェノン(246mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)および2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.1mmol)のアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量により、4−アセチルベンゾトリフルオリド(生成率28%)の生成を確認した。
19F−NMR(250MHz,CDCl3):δ−63.4.
GCEIMSm/z(intensity):43(11),95(9.6),145(78),173(100),174(9.4),188(12).
4-Iodoacetophenone (246 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed into a Pyrex tube (7 ml), and the inside of the system was put under an argon atmosphere, and then copper iodide (19 mg, 0. 1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.1 mmol) in acetonitrile (2.0 ml) were added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. The production of 4-acetylbenzotrifluoride (production rate 28%) was confirmed by the molecular weight obtained by 19 F-NMR and GCEIMS using α, α, α-trifluorotoluene as an internal standard.
19 F-NMR (250 MHz, CDCl 3 ): δ-63.4.
GCEIMS m / z (intensity): 43 (11), 95 (9.6), 145 (78), 173 (100), 174 (9.4), 188 (12).
(実施例20)
パイレックス管(7ml)に4−ヨードアニソール(234mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)および2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.1mmol)のアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量により、4−メトキシベンゾトリフルオリド(生成率19%)の生成を確認した。
19F−NMR(250MHz,CDCl3):δ−61.8.
GCEIMSm/z(intensity):113(25),133(33),145(33),146(35),176(100).
4-Iodoanisole (234 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed into a Pyrex tube (7 ml), and the inside of the system was placed in an argon atmosphere, and then copper iodide (19 mg, 0. 1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.1 mmol) in acetonitrile (2.0 ml) were added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. The production of 4-methoxybenzotrifluoride (production rate 19%) was confirmed by the molecular weight obtained by 19 F-NMR and GCEIMS using α, α, α-trifluorotoluene as an internal standard.
19 F-NMR (250 MHz, CDCl 3 ): δ-61.8.
GCEIMS m / z (intensity): 113 (25), 133 (33), 145 (33), 146 (35), 176 (100).
(実施例21)
パイレックス管(7ml)に2−ヨードトルエン(218mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)および2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.1mmol)のアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量により、2−メチルベンゾトリフルオリド(生成率15%)の生成を確認した。
19F−NMR(250MHz,CDCl3):δ−62.0.
GCEIMSm/z(intensity):91(100),109(12),140(13),141(10),159(11),160(44).
2-Iodotoluene (218 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed into a Pyrex tube (7 ml), and the system was placed in an argon atmosphere. 1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.1 mmol) in acetonitrile (2.0 ml) were added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. Formation of 2-methylbenzotrifluoride (production rate: 15%) was confirmed by molecular weight obtained by 19 F-NMR and GCEIMS using α, α, α-trifluorotoluene as an internal standard.
19 F-NMR (250 MHz, CDCl 3 ): δ-62.0.
GCEIMS m / z (intensity): 91 (100), 109 (12), 140 (13), 141 (10), 159 (11), 160 (44).
(実施例22)
パイレックス管(7ml)に3,5−ビス(トリフルオロメチル)ヨードベンゼン(340mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)および2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.1mmol)のアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRにより、1,3,5−トリス(トリフルオロメチル)ベンゼン(生成率77%)の生成を確認した。
19F−NMR(250MHz,CDCl3):δ−63.4.
3,5-bis (trifluoromethyl) iodobenzene (340 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed into a Pyrex tube (7 ml), and the inside of the system was placed in an argon atmosphere. A solution of copper iodide (19 mg, 0.1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.1 mmol) in acetonitrile (2.0 ml) was added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. The formation of 1,3,5-tris (trifluoromethyl) benzene (production rate 77%) was confirmed by 19 F-NMR in which the internal standard was α, α, α-trifluorotoluene.
19 F-NMR (250 MHz, CDCl 3 ): δ-63.4.
(実施例23)
パイレックス管(7ml)に1−フルオロ−3−ヨード−5−ニトロベンゼン(267mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)および2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.1mmol)のアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量により、3−フルオロ−5−ニトロベンゾトリフルオリド(生成率48%)の生成を確認した。
19F−NMR(250MHz,CDCl3):δ−63.3.
GCEIMSm/z(intensity):113(25),143(26),163(100),209(58).
To a Pyrex tube (7 ml), 1-fluoro-3-iodo-5-nitrobenzene (267 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed, and the system was placed in an argon atmosphere. A solution of copper chloride (19 mg, 0.1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.1 mmol) in acetonitrile (2.0 ml) was added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. The production of 3-fluoro-5-nitrobenzotrifluoride (production rate 48%) was confirmed by the molecular weight obtained by 19 F-NMR and GCEIMS with the internal standard being α, α, α-trifluorotoluene.
19 F-NMR (250 MHz, CDCl 3 ): δ-63.3.
GCEIMS m / z (intensity): 113 (25), 143 (26), 163 (100), 209 (58).
(実施例24)
パイレックス管(7ml)にp−ジヨードベンゼン(330mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19.0mg、0.10mmol)と2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.10mmol)のアセトニトリル溶液(2.0ml)を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30mL、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量により、4−ヨードベンゾトリフルオリド(生成率27%)および1,4−ビス(トリフルオロメチル)ベンゼン(生成率8.7%)の生成を確認した。 P-diiodobenzene (330 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed into a Pyrex tube (7 ml), and the system was placed in an argon atmosphere, and then copper iodide (19.0 mg) was obtained. , 0.10 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.10 mmol) in acetonitrile (2.0 ml) was added. To this solution was added trifluoromethyltrimethylsilane (0.30 mL, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. Depending on the molecular weight obtained by 19 F-NMR and GCEIMS with the internal standard being α, α, α-trifluorotoluene, 4-iodobenzotrifluoride (production rate 27%) and 1,4-bis (trifluoromethyl) Formation of benzene (production rate: 8.7%) was confirmed.
(比較例1)
パイレックス管(7ml)に4−ニトロヨードベンゼン(249mg、1.0mmol)、フッ化カリウム(58.0mg、1.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)および1,10−フェナントロリン(18.0mg、0.1mmol)のアセトニトリル(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。反応混合物に水(2.0ml)を入れ、酢酸エチル(4.0ml×3)にて抽出した。有機層を合わせて、水(2ml)と飽和塩化ナトリウム水溶液(2ml)にて順次洗浄し、乾燥後、ろ液を減圧濃縮した。得られた油状物を中圧シリカゲルカラムクロマトグラフィー(ヘキサン−酢酸エチル)により精製することにより、4−ニトロベンゾトリフルオリド(104mg、生成率55%)を無色粉末として得た。 4-nitroiodobenzene (249 mg, 1.0 mmol) and potassium fluoride (58.0 mg, 1.0 mmol) were weighed into a Pyrex tube (7 ml), and the system was placed in an argon atmosphere, and then copper iodide (19 mg , 0.1 mmol) and 1,10-phenanthroline (18.0 mg, 0.1 mmol) in acetonitrile (2.0 ml) were added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. Water (2.0 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate (4.0 ml × 3). The organic layers were combined, washed successively with water (2 ml) and saturated aqueous sodium chloride solution (2 ml), dried, and the filtrate was concentrated under reduced pressure. The obtained oil was purified by medium pressure silica gel column chromatography (hexane-ethyl acetate) to give 4-nitrobenzotrifluoride (104 mg, yield 55%) as a colorless powder.
(比較例2)
パイレックス管(7ml)に4−ニトロヨードベンゼン(249mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)および2−(N,N−ジメチルアミノメチル)ピリジン(19.3mg、0.1mmol)のN,N−ジメチルアセトアミド(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量により、4−ニトロベンゾトリフルオリド(生成率41%)の生成を確認した。 To a Pyrex tube (7 ml), 4-nitroiodobenzene (249 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed, and the system was placed in an argon atmosphere, and then copper iodide (19 mg, 0 mmol) was measured. 0.1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (19.3 mg, 0.1 mmol) in N, N-dimethylacetamide (2.0 ml) were added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. Formation of 4-nitrobenzotrifluoride (production rate: 41%) was confirmed by molecular weight obtained by 19 F-NMR and GCEIMS using α, α, α-trifluorotoluene as an internal standard.
(比較例3)
パイレックス管(7ml)に4−クロロヨードベンゼン(238mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)および2−(N,N−ジメチルアミノメチル)ピリジン(13.6mg、0.1mmol)のN,N−ジメチルアセトアミド(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量と保持時間を、市販の標準試料と比較することにより、4−クロロベンゾトリフルオリド(生成率16%)の生成を確認した。 To a Pyrex tube (7 ml), 4-chloroiodobenzene (238 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed, and the inside of the system was placed in an argon atmosphere, and then copper iodide (19 mg, 0 mmol) was obtained. 0.1 mmol) and 2- (N, N-dimethylaminomethyl) pyridine (13.6 mg, 0.1 mmol) in N, N-dimethylacetamide (2.0 ml) were added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. By comparing the molecular weight and retention time obtained by 19 F-NMR and GCEIMS with α, α, α-trifluorotoluene as the internal standard, 4-chlorobenzotrifluoride (production rate 16 %) Was confirmed.
(比較例4)
パイレックス管(7ml)に4−ヨードアニソール(234mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)および1,10−フェナントロリン(18.0mg、0.1mmol)のN,N−ジメチルアセトアミド(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量により、4−メトキシベンゾトリフルオリド(生成率3.0%)の生成を確認した。 4-Iodoanisole (234 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed into a Pyrex tube (7 ml), and the inside of the system was placed in an argon atmosphere, and then copper iodide (19 mg, 0. 1 mmol) and 1,10-phenanthroline (18.0 mg, 0.1 mmol) in N, N-dimethylacetamide (2.0 ml) were added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. The production of 4-methoxybenzotrifluoride (production rate: 3.0%) was confirmed by the molecular weight obtained by 19 F-NMR and GCEIMS using α, α, α-trifluorotoluene as an internal standard.
(比較例5)
パイレックス管(7ml)に3−ニトロヨードベンゼン(249mg、1.0mmol)、フッ化カリウム(116mg、2.0mmol)を量り取り、系内をアルゴン雰囲気下とした後、ヨウ化銅(19mg、0.1mmol)および1,10−フェナントロリン(18.0mg、0.1mmol)のN,N−ジメチルアセトアミド(2.0ml)溶液を加えた。この溶液にトリフルオロメチルトリメチルシラン(0.30ml、2.0mmol)を添加し、密封後60℃にて24時間攪拌した。内部標準をα,α,α−トリフルオロトルエンとした19F−NMRおよびGCEIMSにより得られた分子量と保持時間を、市販の標準試料と比較することにより、3−ニトロベンゾトリフルオリド(生成率46%)の生成を確認した。 3-Nitroiodobenzene (249 mg, 1.0 mmol) and potassium fluoride (116 mg, 2.0 mmol) were weighed into a Pyrex tube (7 ml), and the inside of the system was placed in an argon atmosphere, and then copper iodide (19 mg, 0 mmol) was obtained. 0.1 mmol) and 1,10-phenanthroline (18.0 mg, 0.1 mmol) in N, N-dimethylacetamide (2.0 ml) were added. To this solution was added trifluoromethyltrimethylsilane (0.30 ml, 2.0 mmol), and after sealing, the mixture was stirred at 60 ° C. for 24 hours. By comparing the molecular weight and retention time obtained by 19 F-NMR and GCEIIMS with α, α, α-trifluorotoluene as the internal standard, by comparing with a commercially available standard sample, 3-nitrobenzotrifluoride (productivity 46 %) Was confirmed.
Claims (10)
[式中、R1、R2及びR3は各々独立に炭素数1から4のアルキル基を示す。]で表されるトリアルキルトリフルオロメチルシラン類を、フッ化カリウム、及び下記一般式(2)
[式中、Xはハロゲン原子または置換されていてもよい炭素数2から4のアシルオキシ基を示す。]で表される一価の銅塩存在下、一般式(3)
[式中、nは1または2を示し、Yは、水素原子、置換されていてもよい炭素数1から4のアルキル基、置換されていてもよい炭素数2から4のアルケニル基、置換されていてもよい炭素数2から4のアルキニル基、置換されていてもよい炭素数1から4のアルコキシ基、ハロゲン原子、置換されていてもよい炭素数2から5のアルコキシカルボニル基、置換されていてもよい炭素数2から5のアシル基、シアノ基またはニトロ基を示す。nが2の時、Yは同一または相異なっていてもよい。]で表されるヨードベンゼン誘導体とを反応させ、一般式(4)
[式中、Yおよびnは前記と同じ内容を示す。]で表されるベンゾトリフルオリド類の製造方法において、一般式(5)
[式中、R4は置換されていてもよい4,5−ジヒドロオキサゾール−2−イル基または炭素数3から7のN,N−ジアルキルアミノメチル基を示す。R5は水素原子、置換されていてもよい炭素数1から4のアルキル基、置換されていてもよい4,5−ジヒドロオキサゾール−2−イル基または炭素数3から7のN,N−ジアルキルアミノメチル基を示す。R6、R7及びR8は、各々独立に、水素原子、置換されていてもよい炭素数1から4のアルキル基、置換されていてもよい炭素数1から4のアルコキシ基、炭素数2から6のジアルキルアミノ基を示す。]で表されるピリジン誘導体の共存下でニトリル系溶媒中で反応させることを特徴とする、一般式(4)で表されるベンゾトリフルオリド類の製造方法。 General formula (1)
[Wherein, R 1 , R 2 and R 3 each independently represents an alkyl group having 1 to 4 carbon atoms. ] The trialkyltrifluoromethylsilanes represented by the formula: potassium fluoride and the following general formula (2)
[Wherein, X represents a halogen atom or an optionally substituted acyloxy group having 2 to 4 carbon atoms. In the presence of a monovalent copper salt represented by the general formula (3)
[Wherein n represents 1 or 2, Y represents a hydrogen atom, an optionally substituted alkyl group having 1 to 4 carbon atoms, an optionally substituted alkenyl group having 2 to 4 carbon atoms, or substituted. Optionally substituted alkynyl group having 2 to 4 carbon atoms, optionally substituted alkoxy group having 1 to 4 carbon atoms, halogen atom, optionally substituted alkoxycarbonyl group having 2 to 5 carbon atoms, substituted An acyl group having 2 to 5 carbon atoms, a cyano group or a nitro group may be used. When n is 2, Y may be the same or different. And an iodobenzene derivative represented by the general formula (4):
[Wherein Y and n represent the same contents as described above. ] In the manufacturing method of benzotrifluoride represented by General formula (5)
[Wherein, R 4 represents an optionally substituted 4,5-dihydrooxazol-2-yl group or an N, N-dialkylaminomethyl group having 3 to 7 carbon atoms. R 5 represents a hydrogen atom, an optionally substituted alkyl group having 1 to 4 carbon atoms, an optionally substituted 4,5-dihydrooxazol-2-yl group, or an N, N-dialkyl group having 3 to 7 carbon atoms. An aminomethyl group is shown. R 6 , R 7 and R 8 are each independently a hydrogen atom, an optionally substituted alkyl group having 1 to 4 carbon atoms, an optionally substituted alkoxy group having 1 to 4 carbon atoms, or 2 carbon atoms. To 6 dialkylamino groups. ] The manufacturing method of the benzotrifluorides represented by General formula (4) characterized by making it react in a nitrile-type solvent in coexistence of the pyridine derivative represented by these.
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