JPS54141748A - Preparation of o-trifluoromethylbenzoic acid - Google Patents

Preparation of o-trifluoromethylbenzoic acid

Info

Publication number
JPS54141748A
JPS54141748A JP4786978A JP4786978A JPS54141748A JP S54141748 A JPS54141748 A JP S54141748A JP 4786978 A JP4786978 A JP 4786978A JP 4786978 A JP4786978 A JP 4786978A JP S54141748 A JPS54141748 A JP S54141748A
Authority
JP
Japan
Prior art keywords
pref
chloro
alkyl bromide
benzotrifluoride
lower alkyl
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.)
Granted
Application number
JP4786978A
Other languages
Japanese (ja)
Other versions
JPS625137B2 (en
Inventor
Kunio Kawabata
Akira Hirano
Kunihiro Yabutani
Kenichi Ikeda
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.)
Nihon Nohyaku Co Ltd
Original Assignee
Nihon Nohyaku Co Ltd
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
Application filed by Nihon Nohyaku Co Ltd filed Critical Nihon Nohyaku Co Ltd
Priority to JP4786978A priority Critical patent/JPS54141748A/en
Publication of JPS54141748A publication Critical patent/JPS54141748A/en
Publication of JPS625137B2 publication Critical patent/JPS625137B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To prepare the title compound useful as an intermediate of pesticides, etc., economically, in high yield, by carbonating a compound obtained by reacting O-chloro-benzotrifluoride with Mg in the presence of a lower alkyl bromide.
CONSTITUTION: O-Chloro-benzotrifluoride is made to react with Mg in the presence of a 2W4C alkyl bromide, pref. isopropyl bromide, in a solvent such as tetrahydro- furan, at 20W120°C, pref. 50W60°C, and the reaction product is carbonated with a carbonating reagent (e.g. CO2, dry ice) to afford the objective O-trifluoro-methylbenzoic acid. The molar ratio of lower alkyl bromide to O-chloro-bebzotrifluoride is more than 1, and that of Mg to the sum of the above two starting materials is pref. more than 1.
COPYRIGHT: (C)1979,JPO&Japio
JP4786978A 1978-04-24 1978-04-24 Preparation of o-trifluoromethylbenzoic acid Granted JPS54141748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4786978A JPS54141748A (en) 1978-04-24 1978-04-24 Preparation of o-trifluoromethylbenzoic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4786978A JPS54141748A (en) 1978-04-24 1978-04-24 Preparation of o-trifluoromethylbenzoic acid

Publications (2)

Publication Number Publication Date
JPS54141748A true JPS54141748A (en) 1979-11-05
JPS625137B2 JPS625137B2 (en) 1987-02-03

Family

ID=12787373

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4786978A Granted JPS54141748A (en) 1978-04-24 1978-04-24 Preparation of o-trifluoromethylbenzoic acid

Country Status (1)

Country Link
JP (1) JPS54141748A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0491326A2 (en) * 1990-12-17 1992-06-24 ISTITUTO GUIDO DONEGANI S.p.A. Process for the functionalization of trifluoromethylbenzenes
JP2006265133A (en) * 2005-03-23 2006-10-05 Central Glass Co Ltd Method for producing 4-methyl-3-trifluoromethylbenzoic acid

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0491326A2 (en) * 1990-12-17 1992-06-24 ISTITUTO GUIDO DONEGANI S.p.A. Process for the functionalization of trifluoromethylbenzenes
EP0491326A3 (en) * 1990-12-17 1992-11-04 Istituto Guido Donegani S.P.A. Process for the functionalization of trifluoromethylbenzenes
JP2006265133A (en) * 2005-03-23 2006-10-05 Central Glass Co Ltd Method for producing 4-methyl-3-trifluoromethylbenzoic acid

Also Published As

Publication number Publication date
JPS625137B2 (en) 1987-02-03

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