Process for the preparation of aromatic sulfonic anhydrides

摘要

Preparation of aryl sulfonic acid anhydrides compound (I) comprises reaction of aryl sulfonic acid compound (II) with thionyl chloride in the presence of at least an aliphatic hydrocarbon or optionally a solvent. Preparation of aryl sulfonic acid anhydride compound of formula (I) comprises reaction of aryl sulfonic acid compound of formula (II) with thionyl chloride in the presence of at least an aliphatic hydrocarbon or optionally a solvent. R 1>-R 5>H, 1-12C-(fluoro)alkyl, 1-12C-(fluoro)alkoxy, 4-18C-aryl, 5-19C-arylalkyl, halo or NO 2. [Image].