Reactive lignin intermediates. VI. Oxidation and coupling of isoeugenol with a quinone methide

Abstract

Isoeugenol(1b) was oxidatively coupled by the quinone methide 2,6-di-t- butyl-4-methylenecyclohexa-2,5-dienone (4a). A simple isoeugenol- quinone methide addition product was not observed but a 2 : 1 isoeugenol quinone methide adduct was isolated. It is suggested that α- α links may occur in lignin.