ω-Carbamoylsulfoxides undergo a novel intramolecular Pummerer-type reaction with O-silylated ketene acetal in dry acetonitrile in the presence of a catalytic amount of zinc iodide to give α-thiolactams in good to excellent yields under nearly neutral conditions.
在干燥的
乙腈中,在一定量的
碘化锌催化下,ω-
氨基甲酰
硫醚与 O-
硅烷化酮
缩醛发生了一种新颖的分子内 Pummerer 型反应,从而在接近中性的条件下以良好到极好的收率得到了 α-
硫内酰胺。