Patent · US Expired

Preparation of o-chloromethylbenzoyl chlorides

US5504249A · kind A · utility

2Cited by

5References

7Claims

0Family size

Assignee

BASF SE

Inventors

Heinz Isak · Haßloch, DE
Herbert Bayer · Mannheim, DE
Michael Keil · Freinsheim, DE
Thomas Wettling · Schifferstadt, DE

Key dates

Filing date	Mar 31, 1995
Grant date	Apr 2, 1996
Priority date	—
Expiry date	Mar 31, 2015

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C51/58
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.