Preparation of o-chloromethylbenzoyl chlorides

Details Preparation of o-chloromethylbenzoyl chlorides Preparation of o-chloromethylbenzoyl chlorides

1995-03-31

1996-04-02

Killos, Paul J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic halides

562862, C02C 5158

Patent

active

055042490

ABSTRACT:
A process for preparing o-chloromethylbenzoyl chlorides of the formula I ##STR1## where m is 0 or an integer from 1 to 4 and
X is halogen or C-organic radicals,
entails reacting a corresponding lactone of the formula II ##STR2## with thionyl chloride in the presence of a catalyst.

REFERENCES:
patent: 2548161 (1951-04-01), Jansen et al.
patent: 2778852 (1957-01-01), Adam et al.
patent: 3418365 (1968-12-01), Gustafson
patent: 4764309 (1988-08-01), Deckers et al.
patent: 4871484 (1989-10-01), Fiege et al.
Chemical Abstract 106 (1987) 84, 307y.

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