CN101538227B - 含七氟异丙基苯甲酰脲类化合物及其用途 - Google Patents
含七氟异丙基苯甲酰脲类化合物及其用途 Download PDFInfo
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Classifications
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- C—CHEMISTRY; METALLURGY
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- C07C275/00—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C275/46—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups containing any of the groups, X being a hetero atom, Y being any atom, e.g. acylureas
- C07C275/48—Y being a hydrogen or a carbon atom
- C07C275/54—Y being a carbon atom of a six-membered aromatic ring, e.g. benzoylureas
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
- A01N47/34—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the groups, e.g. biuret; Thio analogues thereof; Urea-aldehyde condensation products
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Abstract
Description
技术领域
本发明涉及一种苯甲酰脲衍生物及其用途。具体地说,涉及一种含七氟异丙基苯甲酰脲类化合物及其用途。
背景技术
农药对农业生产具有重要的意义,但传统农药的高毒、高残留性、低效使它们已经不能适应农业发展和人们对环境保护的要求,因此研究和开发新一代高效、低毒、无公害环保型农药越来越引起人们的重视。
1970年,荷兰Philips-Duphar公司在研究除草剂中偶然发现了苯甲酰脲类结构具有杀虫活性,并成功开发出第一个商品化的几丁质抑制剂-敌灭灵。从此开始了苯甲酰脲类化合物开发和研究工作。目前专利中报道的苯甲酰脲类化合物有几千个,已商品化的苯甲酰脲类化合物有近三十多种,如氟铃脲、伏虫脲、氟幼脲、虱螨脲、氟环脲、双三氟虫脲、多氟虫酰脲、氟虫脲、杀铃脲、伏虫隆、定虫隆、氟酰脲等等。该类化合物表现出广泛的应用价值。但已商品化的或文献报道的苯甲酰脲类化合物普遍存在溶解性较差,用药后见效较慢等不足。
因此,改善现有苯甲酰脲类化合的溶解性、提高其杀虫活性和降低其制备成本成为本发明需要解决的技术问题。
发明内容
本发明的发明人经广泛及深入的研究发现:在苯甲酰脲类化合物的恰当苯环上引入七氟异丙基,能改善其溶解性能,使该类化合物更易于在害虫体内吸收,提高其杀虫活性。
鉴于此,本发明提供一种新型的苯甲酰脲类化合物及其用途。
本发明所说的苯甲酰脲类化合物,其具有式I所示结构:
式I中:R1和R2分别选自H或卤素(F、Cl、Br或I)中一种;R3,R4,R5,R6和R7分别独立选自H、卤素(F、Cl、Br或I)、烷基、氟代烷基或烷氧基中一种,且R3,R4,R5,R6和R7中至少有一个为氟代烷基。
在本发明一个优选技术方案中,R3,R4,R5,R6和R7分别独立选自H、卤素(F、Cl、Br或I)、C1~C6烷基、C1~C6烷氧基或七氟异丙基中一种,且R3,R4,R5,R6和R7中至少有一个为七氟异丙基;
在本发明另一个优选技术方案中,R3,R4,R5,R6和R7分别独立选自卤素(F、Cl、Br或I)、C1~C3烷基、C1~C3烷氧基或七氟异丙基中一种,且R3,R4,R5,R6和R7中至少有一个为七氟异丙基;
在本发明又一个优选技术方案中,R3,R4,R5,R6和R7分别独立选自H、F、Br、C1~C3烷基、七氟异丙基或C1~C3烷氧基中一种,且R3,R4,R5,R6和R7中至少有一个为七氟异丙基。
具体实施方式
制备本发明所说的芳酰脲类化合物(式I所示化合物)的方法,其主要步骤是:由苯胺衍生物(式II所示化合物)和异氰酸酯类化合物(式III所示化合物)于15℃~35℃反应0.5~5小时制得。其反应方程式如下所示:
其中:式II和式III所示化合物的制备参见(刘长春.浙江化工,2001,32(1):15;OnishiMasanobu,EP1380568,2004)。R1,R2,R3,R4,R5,R6和R7的含义与前文所述相同。
本发明设计并制备的芳酰脲类化合物(式I所示化合物)具有较高的杀粘虫活性,其中有些化合物的LC50达到0.1mg/L。此外,本发明所述芳酰脲类化合物的制备简单且成本较低,具有商业应用价值。
下面通过实施例对本发明作进一步说明,其目的仅在于更好理解本发明的内容。因此,本发明的保护范围不受所举之例的限制:
实施例1
N-(2,6-二氟苯甲酰基)-N’-[(4-七氟异丙基)苯基]脲(化合物1)的合成:
在室温(15℃~35℃)条件下,将1.8克2,6-二氟苯甲酰异氰酸酯滴入由2.6克4-七氟异丙基苯胺和15毫升丙酮所成的溶液中。反应30分钟以后,过滤收集析出的固体,石油醚洗涤固体,得3.5克N-(2,6-二氟苯甲酰基)-N’-[(4-七氟异丙基)苯基]脲,收率79%。乙醇重结晶后得白色针状晶体,熔点(mp):213.5-215.9℃。
1H NMR(CDCl3/TMS),δ(ppm):7.06(2H,t,J=8.4Hz,ArH),7.57(3H,d,J=8.8Hz,ArH),7.66(2H,d,J=8.4Hz,ArH),8.92(1H,s,NH),10.63(1H,s,NH);
HR-MS C17H9F9N2O2的测定值:444.0520;理论值:444.0520。
实施例2
N-(2,6-二氟苯甲酰基)-N’-[(2-氯-4-七氟异丙基)苯基]脲(化合物2)的合成:
除原料外,其余条件均与实施例1中所述相同,可制得N-(2,6-二氟苯甲酰基)-N’-[(2-氯-4-七氟异丙基)苯基]脲,mp:191.2-193.5℃。其反应方程式如下所示:
1HNMR(CDCl3/TMS),δ(ppm):7.09(2H,t,J=8.8Hz,ArH),7.54(2H,t,J=7.2Hz,ArH),7.69(1H,s,ArH),8.19(1H,s,NH),8.53(1H,d,J=8.8Hz,ArH),11.16(1H,s,NH);
HR-MS C17H8F9ClN2O2的测定值:478.0131;理论值:478.0131。
实施例3
N-(2,6-二氟苯甲酰基)-N’-[(3-溴-4-七氟异丙基)苯基]脲(化合物3)的合成:
除原料外,其余条件均与实施例1中所述相同,可制得N-(2,6-二氟苯甲酰基)-N’-[(3-溴-4-七氟异丙基)苯基]脲,mp:183.7-185.3℃。其反应方程式如下所示:
1H NMR(CDCl3/TMS),δ(ppm):7.07(2H,t,J=8.4Hz,ArH),7.17(1H,t,J=8.0Hz,ArH),7.26(1H,t,J=7.2Hz,ArH),7.51-7.58(1H,m,ArH),7.77(1H,s,ArH),9.93(1H,s,NH),10.57(1H,s,NH);HR-MS C17H8BrF9N2O2的测定值:521.9625;理论值:521.9625。
实施例4
N-(2,6-二氟苯甲酰基)-N’-[(2-甲基-4-七氟异丙基)苯基]脲(化合物4)的制备:
除原料外,其余条件均与实施例1中所述相同,可制得N-(2,6-二氟苯甲酰基)-N’-[(2-甲基-4-七氟异丙基)苯基]脲,mp:180.7-182.8℃。其反应方程式如下所示:
1H NMR(CDCl3/TMS),δ(ppm):2.46(3H,s,CH3),7.04(2H,t,J=8.0Hz,ArH),7.37(1H,d,J=8.8Hz,ArH),7.45(1H,s,ArH),7.49-7.56(1H,m,ArH),8.05(1H,d,J=8.8Hz,ArH),9.64(1H,s,NH),10.62(1H,s,NH);HR-MS C18H11F9N2O2的测定值:458.0677;理论值:458.0677。
实施例5
N-(2,6-二氟苯甲酰基)-N’-[(3-氯-4-七氟异丙基)苯基]脲(化合物5)的制备:
除原料外,其余条件均与实施例1中所述相同,可制得N-(2,6-二氟苯甲酰基)-N’-[(3-氯-4-七氟异丙基)苯基]脲,mp:197.9-199.0℃。其反应方程式如下所示:
1H NMR(CDCl3/TMS),δ(ppm):7.08(2H,t,J=8.4Hz,ArH),7.43(1H,d,J=8.8Hz,ArH),7.52-7.59(2H,m,ArH),7.82(1H,s,ArH),9.31(1H,s,NH),10.72(1H,s,NH);HR-MSC17H8F9ClN2O2的测定值:478.0131;理论值:478.0131。
实施例6
N-(2,6-二氟苯甲酰基)-N’-[(2,6-二甲基-4-七氟异丙基)苯基]脲(化合物6)的制备:
除原料外,其余条件均与实施例1中所述相同,可制得N-(2,6-二氟苯甲酰基)-N’-[(2,6-二甲基-4-七氟异丙基)苯基]脲,mp:203.6-206.7℃。其反应方程式如下所示:
1H NMR(CDCl3/TMS),δ(ppm):2.38(6H,s,CH3),7.20(3H,t,J=8.4Hz,ArH),7.34(2H,s,ArH),8.78(1H,s,NH),9.85(1H,s,NH);HR-MS:C19H13F9N2O2的测定值:472.0832;理论值:472.0833。
实施例7
N-(2,6-二氟苯甲酰基)N’-[(2-氟-4-七氟异丙基)苯基]脲(化合物7)的制备:
除原料外,其余条件均与实施例1中所述相同,可制得N-(2,6-二氟苯甲酰基)-N’-[(2-氟-4-七氟异丙基)苯基]脲,mp:199.8-202.0℃。其反应方程式如下所示:
1H NMR(CDCl3/TMS),δ(ppm):7.06(2H,t,J=8.8Hz,ArH),7.35(1H,d,J=8.8Hz,ArH),7.74(1H,d,J=4.8Hz,ArH),8.29(1H,s,ArH),9.11(1H,s,NH),10.91(1H,s,NH);MS(EI,70ev):m/z(%)=462(M+,30),141(100)。
实施例8
N-(2,6-二氟苯甲酰基)-N’-[(2,6-二氟-4-七氟异丙基)苯基]脲(化合物8)的制备:
除原料外,其余条件均与实施例1中所述相同,可制得N-(2,6-二氟苯甲酰基)-N’-[(2-氟-4-七氟异丙基)苯基]脲,mp:197.3-198.9℃。其反应方程式如下所示:
1H NMR(CDCl3/TMS),δ(ppm):7.02(2H,t,J=8.8Hz,ArH),7.27(1H,d,J=8.0Hz,ArH),7.36(1H,d,J=5.2Hz,ArH),7.47-7.52(1H,m,ArH),9.20(1H,s,NH),10.05(1H,s,NH);HR-MSC17H7F11N2O2的测定值:480.0332;理论值:480.0332。
实施例9
N-苯甲酰基-N’-[(4-七氟异丙基)苯基]脲的(化合物9)制备:
除原料外,其余条件均与实施例1中所述相同,可制得N-苯甲酰基-N’-[(4-七氟异丙基)苯基]脲,mp.221.7-223.3℃。其反应方程式如下所示:
1H NMR(CDCl3/TMS),δ(ppm):7.52-7.61(4H,m,Ar),7.68(1H,t,J=7.2Hz,ArH),7.74(2H,d,J=8.4Hz,ArH),8.01(2H,d,J=7.2Hz,ArH),9.42(1H,s,NH),11.14(1H,s,NH);HR-MSC17H11F7N2O2的测定值:408.0703;理论值:408.0709。
实施例10
N-(2-氯苯甲酰基)-N’-[(4-七氟异丙基)苯基]脲(化合物10)的制备:
除原料外,其余条件均与实施例1中所述相同,可制得N-苯甲酰基-N’-[(4-七氟异丙基)苯基]脲,mp:202.3-204.1℃。其反应方程式如下所示:
1H NMR(CDCl3/TMS),δ(ppm):7.40-7.43(1H,m,ArH),7.52(2H,t,J=2.0Hz,ArH),7.55(2H,s,ArH),7.66(2H,s,ArH),7.73(1H,t,J=2.4Hz,ArH),9.33(1H,s,NH),10.78(1H,s,NH);MS(EI,70ev):m/z(%)=442(M+,5),139(100)。
实施例11
N-(2-氯苯甲酰基)-N’-[(2,6-二甲基-4-七氟异丙基)苯基]脲(化合物11)的制备:
除原料外,其余条件均与实施例1中所述相同,可制得N-(2-氯苯甲酰基)-N’-[(2,6-二甲基-4-七氟异丙基)苯基]脲,mp:193.5-196.0℃。其反应方程式如下所示:
1H NMR(CDCl3/TMS),δ(ppm):2.36(6H,s,CH3),7.34(1H,s,ArH),7.44(2H,t,J=2.4Hz,ArH),7.71(1H,d,J=7.2Hz,ArH),9.37(1H,s,NH),10.02(1H,s,NH);MS(EI,70ev):m/z(%)=470(M+,20),315(100)。
实施例12
N-(2,6-二氟苯甲酰基)-N’-[(2-七氟异丙基-4-甲基)苯基]脲(化合物12)的制备:
除原料外,其余条件均与实施例1中所述相同,可制得N-(2,6-二氟苯甲酰基)-N’-[(2-七氟异丙基-4-甲基)苯基]脲,mp:177.6-178.6℃。其反应方程式如下所示:
1H NMR(CDCl3/TMS),δ(ppm):2.41(3H,s,CH3),7.01(2H,t,J=8.4Hz,ArH),7.32(2H,t,J=8.4Hz,ArH),7.45-7.52(1H,m,ArH),7.75(1H,s,ArH),9.02(1H,s,NH),10.60(1H,s,NH);HR-MS C18H11F9N2O2的测定值:458.0678;理论值:458.0677。
实施例13
N-(2,6-二氟苯甲酰基)-N’-[(2-七氟异丙基-4-甲氧基)苯基]脲(化合物13)的制备:
除原料外,其余条件均与实施例1中所述相同,可制得N-(2,6-二氟苯甲酰基)-N’-[(2-七氟异丙基-4-甲氧基)苯基]脲,mp:173.9-175.6℃。其反应方程式如下所示:
1H NMR(CDCl3/TMS),δ(ppm):3.85(3H,s,OCH3),6.96-7.03(3H,m,ArH),7.09(1H,s,ArH),7.42-7.49(1H,m,ArH),7.66(1H,s,ArH),9.32(1H,s,NH),10.44(1H,s,NH);HR-MSC18H11F9N2O3的测定值:474.0612理论值:474.0626。
实施例14
N-(2,6-二氟苯甲酰基)-N’-[(2-七氟异丙基-4-溴)苯基]脲(化合物14)的制备:
除原料外,其余条件均与实施例1中所述相同,可制得N-(2,6-二氟苯甲酰基)-N’-[(2-七氟异丙基-4-溴)苯基]脲,mp:161.7-163.1℃。其反应方程式如下所示:
1H NMR(CDCl3/TMS),δ(ppm):6.98-7.03(2H,m,ArH),7.46-7.58(1H,m,ArH),7.60(2H,d,J=8.0Hz,ArH),7.83(1H,s,ArH),9.41(1H,s,NH),10.80(1H,s,NH);HR-MS C17H8BrF9N2O2的测定值:521.9625理论值:521.9625。
实施例15
杀虫活性的测定:
(1)生测试虫的选取:选取2龄粘虫幼虫为测试对象。
(2)生测方法:取适量的原药溶解到有机溶剂中,加入有少许乳化剂的水溶液,配成0.01-100mg/L浓度的药液,将新鲜的玉米叶浸入药液内,待浸润完全后取出晾干备用。在直径为7cm的培养皿中,放入东方粘虫2龄幼虫10只,将上述已准备好的玉米叶放入培养皿中,用医用纱布封口。每个浓度的药液设置三个重复进行观察。一天后每隔24小时换上新鲜的叶片,96小时后开始观察死亡率,观察时间为5-7天,死亡率为观察已完全死亡的试虫同试虫总数的百分比,具体结果见表1:
表1
Claims (7)
2.如权利要求1所述的苯甲酰脲类化合物,其特征在于,其中R5为七氟异丙基,R3和R7分别独立选自:卤素或C1~C3烷基中一种,R4和R6选自:H、卤素或C1~C3烷基中一种。
3.如权利要求2所述的苯甲酰脲类化合物,其特征在于,其中R3和R7分别独立选自:F或甲基中一种,R4和R6均为H。
4.如权利要求1所述的苯甲酰脲类化合物,其特征在于,其中R3为七氟异丙基,R4~R7分别独立选自:H、卤素或C1~C3烷基中一种。
5.如权利要求4所述的苯甲酰脲类化合物,其特征在于,其中R4~R7分别独立选自:H、Br或甲基中一种。
6.一种苯甲酰脲类化合物,其特征在于,所说的苯甲酰脲类化合物是:N-(2,6-二氟苯甲酰基)-N’-[(2,6-二甲基-4-七氟异丙基)苯基]脲,N-(2,6-二氟苯甲酰基)-N’-[(2,6-二氟-4-七氟异丙基)苯基]脲,N-(2-氯苯甲酰基)-N’-[(2,6-二甲基-4-七氟异丙基)苯基]脲,N-苯甲酰基-N’-[(4-七氟异丙基)苯基]脲,N-(2-氯苯甲酰基)-N’-[(4-七氟异丙基)苯基]脲,N-(2,6-二氟苯甲酰基)-N’-[(2-七氟异丙基-4-甲基)苯基]脲,N-(2,6-二氟苯甲酰基)-N’-[(2-七氟异丙基-4-甲氧基)苯基]脲或N-(2,6-二氟苯甲酰基)-N’-[(2-七氟异丙基-4-溴)苯基]脲。
7.如权利要求1~6中任意一项所述的苯甲酰脲类化合物作为杀虫剂的应用。
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US4240979A (en) * | 1978-09-11 | 1980-12-23 | Basf Aktiengesellschaft | Aroylureas |
US4533676A (en) * | 1982-05-11 | 1985-08-06 | Bayer Aktiengesellschaft | 2,5-Dihalogenobenzoyl-(thio)urea insecticides |
EP0246061A2 (en) * | 1986-05-13 | 1987-11-19 | Sumitomo Chemical Company, Limited | A benzoylurea derivative and its production and use |
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US4240979A (en) * | 1978-09-11 | 1980-12-23 | Basf Aktiengesellschaft | Aroylureas |
US4533676A (en) * | 1982-05-11 | 1985-08-06 | Bayer Aktiengesellschaft | 2,5-Dihalogenobenzoyl-(thio)urea insecticides |
EP0246061A2 (en) * | 1986-05-13 | 1987-11-19 | Sumitomo Chemical Company, Limited | A benzoylurea derivative and its production and use |
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