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.
Benzisothiazol-3-ones through a Metal-Free Intramolecular N-S Bond Formation
作者:Ke Yang、Hao Zhang、Ben Niu、Tiandi Tang、Haibo Ge
DOI:10.1002/ejoc.201801090
日期:2018.11.1
An efficient selectfluor‐promoted synthesis of benzoisothiazol‐3‐ones through a sequential N–S bondformation and C–S bond cleavage process was developed.
Chemistry of O-silylated ketene acetals1: An efficient synthesis of α-thio--heterocycles from ω-amidosulfoxides by a novel intramolecular pummerer-type rearrangement
Treatment of ω-amidosulfoxides with -silylated keteneacetals in dry acetonitrile in the presence of a catalytic amount of zinc iodide causes a novel intramolecular Pummerer-type rearrangement to give α-thio--heterocycles in high yields.