PROCESS FOR THE PREPARATION OF (ARYLETHYL)HYDROQUINONES AND DIESTERS THEREOF

摘要

Disclosed is a process for the preparation of 2-(1-arylethyl)hydroquinones by the reaction of a hydroquinone compound with an arylvinyl compound in the presence of a phosphoric acid alkylation catalyst in a two-phase liquid reaction medium comprising water and a water-immiscible organic solvent. Formation of the corresponding bis-(1-arylethyl)hydroquinone is minimized resulting in excellent selectivity to the mono-(1-arylethyl)hydroquinone compound.