Patent ID: 6106994
Filing Date: 2000-08-22
Classification: C07C,G03F

Abstract:
A process for producing a polyphenol diester which comprises the step of esterifying a polyphenol compound having 2 to 10 phenolic hydroxyl groups and having a molecular weight of equal to or less than 1,000 with a naphthoquinone-1,2-diazidesulfonyl halide in the presence of a compound represented by the following formula (I) or (II): ##STR9## wherein each of R.sup.1, R.sup.3, R.sup.4 and R.sup.5 is independently an alkyl group, alkenyl group or alkoxy group each having from 1 to 4 carbon atoms, R.sup.2 is an alkyl group, alkenyl group or alkoxy group each having from 1 to 10 carbon atoms or a cycloalkyl group having from 3 to 10 carbon atoms, and R.sup.6 is an alkyl group or cycloalkyl group each having from 5 to 10 carbon atoms.