A Short and Efficient Method for the Preparation of α, p-Dimethylstyrene from Citral (1)

Abstract

Acid catalysed cyclization of citral to give α, p-dimethyl styrene using chloranil as an ozidizing agent is reported. The important aspect of this transformation is the dehydration of intermediate piperitenol followed by dehydrogenation to furnish the target compound in 80.5% yield.