Synthesis of Heterocyclic Ketene N,S-Acetals and Their Reactions with Esters of α,β-Unsaturated Acids

Article abstract of DOI:10.1055/s-1990-26822

Ketene S,S-acetals 2 react with 2-amino-1-ethanethiol to afford the substituted 2-methylenethiazolidines 3.The structure of these products as ketene N,S-acetals is confirmed by spectroscopic data.Compounds 3a-f react with esters of α,β-unsaturated acids t