PROCESS FOR THE PRODUCTION OF AROMATIC SULFONYL CHLORIDE HAVING A QUINONEDIAZIDO GROUP

摘要

SO-1-36587C/YT/84. A process for the production of an aromatic sulfonyl chloride having a quinonediazido group is described, comprising reacting a sulfonic acid or its salt represented by the formula (I), Ri-Ar-(SO3M)j, wherein all the symbols are as defined in the appended claims, with phosgene in the presence of a catalyst, whereupon an aromatic sulfonyl chloride having a quinonediazido group of the formula (II), Ri-Ar-(SO2C?)j, is obtained. In accordance with the present invention, the desired sulfonyl chloride can be prepared by a simplified procedure and further in a high yield.