The Formation of Two Kinds of Thiophene Derivatives by the Reaction of the 4H-pyran-4-thione Derivative with Dimethyloxosulfonium Methylide in a One-pot Process

Article abstract of DOI:10.1246/bcsj.53.1763

The reaction of 2,6-dimethyl-3,5-diphenyl-4H-pyran-4-thione with dimethyloxosulfonium methylide occurred facilely to give two kinds of 2-thienylacetones, accompanied by a five-membered α,β-unsaturated thione, a naphtho<2,1-b>thiophene derivative, and a hemithioacetal.