Organoelectrophotocatalytic Generation of Acyl Radicals from Formamides and Aldehydes: Access to Acylated 3-CF<sub>3</sub>-2-Oxindoles
作者:Hong He、Qinhui Wan、Zhong-Wei Hou、Quan Zhou、Lei Wang
DOI:10.1021/acs.orglett.3c02607
日期:2023.9.29
Organoelectrophotocatalytic generation of acyl radicals from formamides and aldehydes to synthesize acylated 3-CF3-2-oxindoles has been developed. This protocol features a monocatalytic system using 9,10-phenanthrenequinone (PQ) both as a catalyst and as a hydrogen atom transfer (HAT) reagent, which avoids the use of an external HAT reagent, metal reagent, and oxidant. A variety of acylated 3-CF3-2-oxindoles
已经开发出由甲酰胺和醛有机电光催化生成酰基自由基以合成酰化3-CF 3 -2-羟吲哚。该协议采用单催化系统,使用 9,10-菲醌 (PQ) 作为催化剂和氢原子转移 (HAT) 试剂,避免使用外部 HAT 试剂、金属试剂和氧化剂。通过串联自由基环化,由CF 3 -取代的N-芳基丙烯酰胺以令人满意的收率获得了多种酰化3- CF 3 -2-羟吲哚。