A Removable Acyl Group Promoted the Intramolecular Dehydro-Diels–Alder Reaction of Styrene-Ynes: Highly Chemoselective Synthesis of Aryldihydronaphthalene Derivatives
A removableacylgroup promoted the intramolecular didehydro-Diels–Alder reaction of styrene-ynes undermild reaction conditions is proposed. The reaction is free of metals and catalysts, is easy to perform, and exhibits good functional group tolerance, providing a highly chemoselective approach for obtaining the valuable aryldihydronaphthalene derivatives.