METHOD FOR PRODUCING AROMATIC OR HETEROCYCLIC CARBOXYLIC ACID

摘要

PROBLEM TO BE SOLVED: To provide a method for industrially and efficiently producing a highly pure aromatic or heterocyclic carboxylic acid without generating by-products, waste and the like. SOLUTION: This method for producing an aromatic or a heterocyclic carboxylic acid having a carboxy group directly bonded to an aromatic ring or a heterocyclic ring is to oxidize methyl group by irradiating lights including visible lights or UV lights to an aromatic compound or a heterocyclic compound having methyl group directly bonded to the aromatic ring or the heterocyclic ring in the presence of a ketone and oxygen.