Cu-Catalyzed carbamoylation<i>versus</i>amination of quinoline<i>N</i>-oxide with formamides
作者:Yan Zhang、Shiwei Zhang、Guangxing Xu、Min Li、Chunlei Tang、Weizheng Fan
DOI:10.1039/c8ob02844c
日期:——
An efficient, direct carbamoylation and amination of quinoline N-oxides with formamides to access 2-carbamoyl and 2-amino quinolines has been developed through copper-catalyzed C–C and C–N bond formations via cross-dehydrogenative coupling reactions. The reaction proceeds smoothly over a broad range of substrates with excellent functional group tolerance under mild conditions. Mechanistic studies suggest
通过铜催化的C-C和C-N键的形成,通过交叉脱氢偶联反应,已开发出一种高效,直接的氨基甲酰基化和喹啉N-氧化物与甲酰胺的胺化反应,以生成2-氨基甲酰基和2-氨基喹啉。在温和条件下,该反应可在广泛的具有良好官能团耐受性的底物上顺利进行。机理研究表明,根据甲酰胺N原子上不同的取代基,在TBHP存在下,该反应是由甲酰胺基或脱羰基氨酰基自由基的形成引发的。