Copper(II)-Mediated Homocoupling of Thioamides for the Synthesis of 1,2,4-Thiadiazoles
作者:Yadong Sun、Wanqing Wu、Huanfeng Jiang
DOI:10.1002/ejoc.201402194
日期:2014.7
A copper(II)-mediated highly selective oxidative cyclization reaction of thioamides to provide 3,5-disubstituted 1,2,4-thiadiazoles was developed. The copper species plays a key role in this transformation and different functional groups are tolerated under the optimal reaction conditions.
开发了铜 (II) 介导的硫代酰胺的高选择性氧化环化反应,以提供 3,5-二取代的 1,2,4-噻二唑。铜物种在这种转化中起着关键作用,并且在最佳反应条件下可以容忍不同的官能团。
A chromatography-free one-pot, two-step synthesis of 1,2,4-thiadiazoles from primary amides via thiolation and oxidative dimerization under solvent-free conditions: a greener approach
An efficient and practical one-pot, two-step synthesis of 1,2,4-thiadiazoles from primary amides with Lawesson reagent (LR) and tert-butyl hydrogen peroxide (TBHP) without solvent is demonstrated for the first time. This groundbreaking and environmentally friendly approach utilises readily available starting materials and eliminates the use of traditional solvents in the reaction process. The broad