Regio- and Stereoselective Hydrothiolation Reactions of Ynamides with Diphenyldithiophosphinic Acid: Straightforward Synthesis of Ketene N,S-Acetal Derivatives
Treatment of N-1-alkynyl-N-methylarenesulfonamides with diphenyldithiophosphinic acid resulted in hydrothiolation reactions to provide ketene N,S-acetal derivatives regio- and stereoselectively.