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GB1503408A - Process for the preparation of geminal dihalides - Google Patents

Process for the preparation of geminal dihalides

Info

Publication number
GB1503408A
GB1503408A GB22974/76A GB2297476A GB1503408A GB 1503408 A GB1503408 A GB 1503408A GB 22974/76 A GB22974/76 A GB 22974/76A GB 2297476 A GB2297476 A GB 2297476A GB 1503408 A GB1503408 A GB 1503408A
Authority
GB
United Kingdom
Prior art keywords
organyl
ketones
triorganylphosphines
geminal
triorganyl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB22974/76A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE2525442A external-priority patent/DE2525442C3/en
Priority claimed from DE19752533988 external-priority patent/DE2533988A1/en
Application filed by Bayer AG filed Critical Bayer AG
Publication of GB1503408A publication Critical patent/GB1503408A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
    • C07B39/00—Halogenation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
    • C07C17/18—Preparation of halogenated hydrocarbons by replacement by halogens of oxygen atoms of carbonyl groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
    • C07C201/06—Preparation of nitro compounds
    • C07C201/12—Preparation of nitro compounds by reactions not involving the formation of nitro groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C253/00—Preparation of carboxylic acid nitriles
    • C07C253/30—Preparation of carboxylic acid nitriles by reactions not involving the formation of cyano groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/11—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms
    • C07C37/18—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms by condensation involving halogen atoms of halogenated compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/58—Preparation of carboxylic acid halides
    • C07C51/60—Preparation of carboxylic acid halides by conversion of carboxylic acids or their anhydrides or esters, lactones, salts into halides with the same carboxylic acid part
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2603/00—Systems containing at least three condensed rings
    • C07C2603/02—Ortho- or ortho- and peri-condensed systems
    • C07C2603/04—Ortho- or ortho- and peri-condensed systems containing three rings
    • C07C2603/06—Ortho- or ortho- and peri-condensed systems containing three rings containing at least one ring with less than six ring members
    • C07C2603/10—Ortho- or ortho- and peri-condensed systems containing three rings containing at least one ring with less than six ring members containing five-membered rings
    • C07C2603/12—Ortho- or ortho- and peri-condensed systems containing three rings containing at least one ring with less than six ring members containing five-membered rings only one five-membered ring
    • C07C2603/18—Fluorenes; Hydrogenated fluorenes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

1503408 Preparation of geminal dihalides BAYER AG 3 June 1976 [7 June 1975 30 July 1975] 22974/76 Heading C2C A geminal dichloride is obtained by reacting phosgene or thionyl chloride with a non- enolizable aldehyde and/or ketone in the presence of an organyl-phosphorus compound of 3- and/or 5-valent P, or in the presence of an N,N-dialkyl-substituted carboxylic acid amide. Specified types or organyl-phosphorus compounds are triorganyl phosphines, diorganylhalosphosphines, triorganyl phosphonium salts, triorganylphosphorus betaines, triorganylphosphinealkylenes, 1,1 - dihalo - triorganylphosphines, 1 - halo - 1 - acyl - triorganylphosphines, 1 - halo - 1 - hydroxy - triorganylphosphines, tri-organyl-phosphine oxides and tri-organyl-phosphine sulphides. The N,N-disubstituted carboxylic amides may be openchain or cyclic compounds. Specified types of aldehydes and ketones for use as starting materials are aliphatic and aromatic aldehydes and ketones, cycloaliphatic ketones, alkylaryl and diaryl ketones as well as diaryl α-diketones. The reaction may be carried out in the presence or absence of solvents. 1,4 - Bis - (4<SP>1</SP>,4<SP>11</SP> - dihydroxy - triphenylmethyl)-benzene is obtained by reacting phenol with 1,4 - bis - (α,α - dichlorobenzyl) - benzene in dioxane.
GB22974/76A 1975-06-07 1976-06-03 Process for the preparation of geminal dihalides Expired GB1503408A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2525442A DE2525442C3 (en) 1975-06-07 1975-06-07 Process for the preparation of geminal dihalides
DE19752533988 DE2533988A1 (en) 1975-07-30 1975-07-30 Geminal dichlorides from aldehydes and ketones - by reaction with phosgene or thionyl chloride using a catalyst

Publications (1)

Publication Number Publication Date
GB1503408A true GB1503408A (en) 1978-03-08

Family

ID=25769002

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22974/76A Expired GB1503408A (en) 1975-06-07 1976-06-03 Process for the preparation of geminal dihalides

Country Status (4)

Country Link
JP (1) JPS51149201A (en)
FR (1) FR2348174A1 (en)
GB (1) GB1503408A (en)
NL (1) NL7606092A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114230434A (en) * 2021-12-28 2022-03-25 河南特格纳特科技有限公司 Method for producing trichlorobenzyl by directional chlorination of alkylbenzene and trichlorobenzyl
CN115160102A (en) * 2022-08-13 2022-10-11 上海珂华生物科技有限公司 Preparation method of gem-dihalide

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5261169B2 (en) * 2008-12-26 2013-08-14 ユアン シン マテリアルズ テクノロジー コーポレイション Process for producing 1,4-bis (dichloromethyl) tetrafluorobenzene
CN108863736A (en) * 2018-07-27 2018-11-23 福州大学 A kind of preparation method of the aromatic carboxylic acids of carbonyl functionalization

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114230434A (en) * 2021-12-28 2022-03-25 河南特格纳特科技有限公司 Method for producing trichlorobenzyl by directional chlorination of alkylbenzene and trichlorobenzyl
CN114230434B (en) * 2021-12-28 2024-01-26 河南特格纳特科技有限公司 Method for producing trichlorobenzyl by directional chlorination of alkylbenzene
CN115160102A (en) * 2022-08-13 2022-10-11 上海珂华生物科技有限公司 Preparation method of gem-dihalide
CN115160102B (en) * 2022-08-13 2024-02-06 上海珂华生物科技有限公司 Preparation method of gem dihalide

Also Published As

Publication number Publication date
NL7606092A (en) 1976-12-09
FR2348174A1 (en) 1977-11-10
JPS51149201A (en) 1976-12-22

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee