PROCESS FOR PRODUCING CHLOROSULFONYLBENZOYL CHLORIDE

摘要

A process for producing a chlorosulfonylbenzoylchloride having the general formula: wherein X represents a hydrogen atom, a halogen atom or nitro group, comprises reacting phosgene with an aromatic sulfocarboxylic acid having the general formula (I) where X is as stated above or an alkali metal salt or alkaline earth metal salt of an aromatic sulfocarboxylic acid of the general formula (I) in the presence of dimethylformamide.