62167-95-7Relevant articles and documents
PHASE MANAGED ORGANIC SYNTHESIS 3. SYMMETRICAL ANHYDRIDES FROM CARBOXYLIC ACIDS VIA POLYMER ASSISTED REACTION.
Fife, Wilmer K.,Zhang, Zhi-dong
, p. 4937 - 4940 (1986)
Symmetrical anhydrides are produced quickly and in high yield by treating mixtures of a carboxylic acid and one-half equivalent thionyl chloride in dichloromethane with a solid-state copolymer of 4-vinylpyridine.This conversion is accomplished equally well in batch or column mode.