The Trityl Cation Catalyzed Michael Type Reaction of Stannylated Nucleophiles with Ethylthioketene Dithioacetals

Abstract

Abstract In the presence of a catalytic amount of trityl salt, allylstannanes and stannylated enolates smoothly react with 2-(2-ethylthioalkylidene)-1,3-dithiolane, synthetic equivalent of α,β-unsaturated ester, to afford the corresponding adducts in good yields, respectively.