Process for producing carboxylated compound

摘要

A process for producing a carboxylated compound, which comprises reacting a carbonyl compound with hydrogen peroxide in the presence of an organo-arsenic acid of the formula (1), <IMAGE> (1) wherein: R1 is a C1-C12 alkyl group which may be substituted or an aryl group which may be substituted, R2 is a hydroxyl group or the same group as that which defines R1, or alternatively, R1 and R2 may bond to each other to form a five-membered or six-membered ring together with As atoms to which these groups are bonded, and the substituent(s) substituted on the above groups is/are selected from hydroxyl, carboxyl, carbonyl, sulfonyl, sulfonium, an amino group, an ammonium group, an alkyl group, an alkoxyl group and a halogen atom, while a water concentration in a reaction system is maintained at not more than 2% by weight, thereby to form a corresponding carboxylated compound.