Novel Synthesis of Thiochromenes via Oxidative Ring Closure of α, β-Unsaturated Carbodithioates

摘要

A variety of naturally occurring thiochromene derivatives have some characteristic biological activities, and therefore the convenient synthesis of thiochromenes are of great interests in the field of synthetic organic chemistry. In this research work, we attempted the short-step preparation of thiochromene ring system by using a hetero Diels-Alder type reaction of α, β-unsaturated thiocarbonyl compounds with in situ generated benzynes.