Elemental sulfur mediated cyclization via redox strategy: Synthesis of benzothiazoles from o -chloronitrobenzenes and benzyl chlorides
作者:Xin Wang、Dazhuang Miao、Xiaotong Li、Renhe Hu、Zhao Yang、Ren Gu、Shiqing Han
DOI:10.1016/j.tet.2017.07.013
日期:2017.8
A novel metal-free synthesis of 2-substituted benzothiazoles from easily available o-chloronitrobenzenes and benzyl chlorides using elemental sulfur as traceless oxidizing agent has been developed. The protocol provides a simple, efficient, and atom-economic way to access to benzothiazoles in moderate to excellent yields. And the approach exhibited good functional group tolerance.
已经开发了一种新的无金属的合成方法,该方法使用元素硫作为无痕氧化剂,由易于获得的邻氯硝基苯和苄基氯合成2-取代的苯并噻唑。该协议提供了一种简单,有效且原子经济的方法来以中等至优异的产率获得苯并噻唑。并且该方法表现出良好的官能团耐受性。