The Stereoselective Michael Reaction of α,β-Unsaturated Thioesters with Silyl Enol Ethers Promoted by Combined Use of Antimony(V) Chloride and Tin(II) Triflate

Abstract
α, β-Unsaturated thioesters react with silyl enol ethers to afford the corresponding Michael adducts stereoselectively in high yields by the use of a new catalyst, combined use of antimony(V) chloride and tin(II) triflate.