Organophotoredox-Catalyzed Direct C–H Amination of 2<i>H</i>-Indazoles with Amines
作者:Sukanya Neogi、Asim Kumar Ghosh、Koushik Majhi、Sadhanendu Samanta、Golam Kibriya、Alakananda Hajra
DOI:10.1021/acs.orglett.0c01973
日期:2020.7.17
A general and practical method for the direct C–H amination of 2H-indazoles with a series of amines including aliphatic primary amines, secondary amines, azoles, and sulfoximines via organophotoredox-catalyzed oxidative coupling has been disclosed at room temperature under ambient air conditions. Additionally, this protocol is used for free aminated 2H-indazole synthesis. A mechanistic study revealed
已经公开了一种在室温下在环境空气条件下通过有机光氧化还原催化的氧化偶合反应,将2 H-吲唑与一系列胺直接进行C-H氨化反应的通用方法,该胺包括脂族伯胺,仲胺,唑和亚砜亚胺。另外,该方案用于游离胺化的2 H-吲唑合成。机理研究表明,该反应可能涉及单电子转移(SET)途径。