oxide/TMEDA-catalyzed cross-coupling of vinyl halides with thiols/diphenyl diselenide in anhydrous DMSO and KOH is reported. Utilizing this protocol various vinyl sulfides and selenides were synthesized in excellent yields with retention of the stereochemistry. The catalyst was recyclable.
A mild and efficient protocol for the stereoselective synthesis of vinyl selenides catalyzed by CuO nanoparticles as recyclable catalyst under ligand-free conditions is reported. This methodology results in the synthesis of a variety of vinyl selenides in excellent yields with retention of stereochemistry.