Iron-Catalyzed Hydrogen Transfer Reduction of Nitroarenes with Alcohols: Synthesis of Imines and Aza Heterocycles
作者:Jiajun Wu、Christophe Darcel
DOI:10.1021/acs.joc.0c02505
日期:2021.1.1
A straightforward and selective reduction of nitroarenes with various alcohols was efficiently developed using an iron catalyst via a hydrogen transfer methodology. This protocol led specifically to imines in 30–91% yields, with a good functional group tolerance. Noticeably, starting from o-nitroaniline derivatives, in the presence of alcohols, benzimidazoles can be obtained in 64–72% yields when the
使用铁催化剂通过氢转移方法有效地开发了用各种醇直接和选择性还原硝基芳烃的方法。该方案专门导致亚胺的产率为30-91%,并具有良好的官能团耐受性。值得注意的是,从邻硝基苯胺衍生物开始,在醇存在下,当与其他氧化剂DDQ进行反应时,苯并咪唑的收率可达64-72%,由28- 96%的产率。这种方法在亚胺的铁中是前所未有的,也为制备喹喔啉和苯并咪唑提供了可持续的替代方法。