Photoredox-catalyzed procedure for carbamoyl radical generation: 3,4-dihydroquinolin-2-one and quinolin-2-one synthesis
作者:Wade F. Petersen、Richard J. K. Taylor、James R. Donald
DOI:10.1039/c7ob01274h
日期:——
A reductive approach for carbamoyl radical generation from N-hydroxyphthalimido oxamides under photoredox catalysis is outlined. This strategy was applied to the synthesis of 3,4-dihydroquinolin-2-ones via the intermolecular addition/cyclization of carbamoyl radicals with electron deficient olefins in a mild, redox-neutral manner. Under a general set of reaction conditions, diversely substituted 3
概述了在光氧化还原催化下由N-羟基邻苯二甲酰亚胺基乙酰胺生成氨基甲酰基自由基的还原方法。该策略通过温和的,氧化还原中性的方式通过与缺电子的烯烃的氨基甲酰基基团的分子间加成/环化反应,应用于3,4-二氢喹啉-2-酮的合成。在一般的反应条件下,可以制备包括螺环系统在内的各种取代的3,4-二氢喹啉-2-酮。通过使用氯取代的烯烃,也可以得到芳族喹啉-2-酮。