PROCESS FOR PREPARING A HYDROXYACID OR HYDROXYESTER

摘要

A process for preparing a hydroxyacid or hydroxyester from a reactant selected from (a) a carboxylic acid having an aldehyde or keto group; and (b) an ester of a carboxylic acid having an aldehyde or keto group; by contacting the reactant with a metal catalyst in the presence of hydrogen, wherein the metal catalyst is supported on a titanium dioxide or zirconium dioxide support.