PREPARATION METHOD OF AROMATIC CARBOXYLIC ACID, AROMATIC ALDEHYDE AND/OR AROMATIC ALCOHOL

摘要

PROBLEM TO BE SOLVED: To efficiently and simultaneously prepare an aromatic carboxylic acid, an aromatic aldehyde and/or an aromatic alcohol of high purity.;SOLUTION: In order to separate an organic phase from an aqueous phase containing water produced as a by-product of the reaction, water added for removing by-products or a base added for removing the by-products in a reaction liquid, obtained by oxidizing an aromatic compound of formula (I) (wherein n is 1, 2, 3, 4 or 5; substituent R is an alkyl, an aryl, an aralkyl, a halogen, a haloalkyl, OR¹, SR¹, SOR¹, SO₂R², NO₂, NR¹R², CH₂OR¹, CH(OR¹)(OR²), C(OR¹)(OR²)(OR³), COR¹ or COCOR¹ (wherein R¹, R² and R³ are each chosen from an alkyl, an aryl or hydrogen), provided that when n is ≥2, multiple Rs are identical to or different from each other), the aqueous phase and a portion of the organic phase are withdrawn, and the organic phase is subsequently recovered from the withdrawn liquid.;COPYRIGHT: (C)2006,JPO&NCIPI