Catalytic and Aerobic Oxidative Biaryl Coupling of Anilines Using a Recyclable Heterogeneous Catalyst for Synthesis of Benzidines and Bicarbazoles
作者:Kenji Matsumoto、Yasunori Toubaru、Shohei Tachikawa、Ayaka Miki、Kentaro Sakai、Syota Koroki、Tsukasa Hirokane、Mitsuru Shindo、Masahiro Yoshida
DOI:10.1021/acs.joc.0c02020
日期:2020.12.4
rhodium-catalyzed oxidative homocoupling reaction of anilines utilizing molecular oxygen as the sole oxidant is reported. Employing a commercially available and recyclable Rh/C catalyst enabled the oxidative dimerization of various anilines, including N,N-disubstituted and N-monosubstituted anilines, as well as diarylamines, triarylamines, and carbazoles. Additionally, the catalytic protocol was extended
在这项研究中,报道了利用分子氧作为唯一氧化剂的苯胺铑的多相催化氧化均偶联反应。使用市售可回收的Rh / C催化剂能够使各种苯胺,包括N,N-二取代和N-单取代的苯胺,以及二芳基胺,三芳基胺和咔唑进行氧化二聚。此外,催化方案扩展到苯胺的邻-邻偶联,从而获得具有高区域选择性的2,2'-二氨基联苯。值得注意的是,已开发的方法可以以操作简单,实用且环境友好的方式快速访问各种功能化的联苯胺和二氨基联苯。