Versatile Cp*Co(III)(LX) Catalyst System for Selective Intramolecular C–H Amidation Reactions
作者:Jia Lee、Jeonghyo Lee、Hoimin Jung、Dongwook Kim、Juhyeon Park、Sukbok Chang
DOI:10.1021/jacs.0c04448
日期:2020.7.15
Herein, we report the development of a tailored cobalt catalyst system of Cp*Co(III)(LX) toward intramolecular C-H nitrene insertion of azidoformates to afford cyclic carbamates. The cobalt complexes were easy to prepare and bench-stable, thus offering a convenient reaction protocol. The catalytic reactivity was significantly improved by the electronic tuning of the bidentate LX ligands, and the observed
在此,我们报告了针对叠氮甲酸酯的分子内 CH 氮烯插入以提供环状氨基甲酸酯的 Cp*Co(III)(LX) 定制钴催化剂系统的开发。钴配合物易于制备且在实验室中稳定,因此提供了方便的反应方案。双齿LX配体的电子调谐显着提高了催化反应性,并且通过构象分析和过渡态的DFT计算使观察到的区域选择性合理化。新开发的钴催化剂体系的优异性能可广泛应用于温和条件下的 C(sp2)-H 和 C(sp3)-H 氨基甲酸化反应。