Iron-Catalyzed Intramolecular Amination of Aliphatic C–H Bonds of Sulfamate Esters with High Reactivity and Chemoselectivity
作者:Wei Liu、Dayou Zhong、Cheng-Long Yu、Yan Zhang、Di Wu、Ya-Lan Feng、Hengjiang Cong、Xiuqiang Lu、Wen-Bo Liu
DOI:10.1021/acs.orglett.9b00660
日期:2019.4.19
It is challenging to develop simple and low cost catalytic systems while maintaining high reactivity and selectivity. An iron-catalyzed intramolecular C–H amination of sulfamate esters using simple and cheap ligands is reported with general substrate scope (31 examples, up to 95% yield). The addition of second ligand, bipyridine, is able to accelerate the reaction and increase the yield. The ready
在保持高反应性和选择性的同时,开发简单且低成本的催化系统是具有挑战性的。据报道,使用简单廉价的配体进行铁催化的氨基磺酸氨基磺酸分子内CH氨基化反应具有一般的底物范围(31个实例,产率高达95%)。第二配体联吡啶的加入能够加速反应并增加产率。这些铁催化剂的容易获得为将氮选择性地引入烃原料提供了一种有前途的方法。