Patent ID: 6245936
Filing Date: 2001-06-12
Classification: C07C

Abstract:
A process for the preparation of a 2-hydroxybenzoic acid and a 4-hydroxybenzaldehyde and derivatives thereof, comprising the steps of:a) mixing a starting phenolic compound carrying a formyl or hydroxymethyl group in the 2 position, and a starting phenolic compound carrying a formyl or hydroxymethyl group in the 4 position,b) selectively oxidizing the formyl or hydroxymethyl group in the 2 position of the phenolic compound carrying said group to a carboxy group,c) optionally, selectively oxidizing the hydroxymethyl group in the 4 position of the phenolic compound carrying said group to a formyl group, andd) recovering a mixture of 2-hydroxybenzoic acid and 4-hydroxybenzaldehyde and derivatives thereof.