Process for preparation of 2-methoxy-3,6-dichloro-benzoic acid

Details Process for preparation of 2-methoxy-3,6-dichloro-benzoic acid Process for preparation of 2-methoxy-3,6-dichloro-benzoic acid

Filed on

1975-10-01

Date issued

1976-07-13

Examiner

Gotts, Lewis

Patent Class

Chemistry of carbon compounds

SubClass

Miscellaneous organic carbon compounds

SubSubClass

C-metal

Other Related Categories

C07C 6502

Type

Patent

Status

active

Patent number

039694046

Description

ABSTRACT:
An improved method of preparing 2-methoxy-3,6-dichloro-benzoic acid which comprises the step of oxidizing 2-methoxy-3,6-dichloro-benzyl alcohol into the correspondingly substituted benzoic acid, where the improvement resides in that the said benzyl alcohol is prepared by catalytically de-brominating 2-hydroxy-5-bromo-3,6-dichloro-benzyl alcohol, followed by methylation of the 2-hydroxy substituent of the de-brominated benzyl alcohol.

REFERENCES:
patent: 3013058 (1961-12-01), Richter
patent: 3335177 (1967-08-01), Robin

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