One-Pot Synthesis of 3-Aryl-5-amino-1,2,4-thiadiazoles from Imidates and Thioureas by I<sub>2</sub>
-Mediated Oxidative Construction of the N-S Bond
作者:Ling Chai、Zhenzhen Lai、Qiangqiang Xia、Jiangpei Yuan、Qilong Bian、Mingjian Yu、Wenkai Zhang、Yuanqing Xu、Hao Xu
DOI:10.1002/ejoc.201800670
日期:2018.8.23
A simple and practical method for the one‐pot synthesis of 3‐aryl‐5‐amino‐1,2,4‐thiadiazoles from imidates and thioureas has been developed. The protocol proceeds through sequential base‐mediated nucleophilic addition‐elimination reactions and an I2‐mediated oxidative coupling for the N–S bond formation.
已开发出一种简单实用的方法,可从酰亚胺和硫脲单锅合成3-芳基-5-氨基-1,2,4-噻二唑。该方案通过顺序的碱基介导的亲核加成消除反应和N 2 S键形成的I 2介导的氧化偶联进行。