air atmosphere, employing readily available building blocks as starting materials, ethanol as a solvent, and Brønsted acid as a catalyst. On the basis of the cascade strategy, 2-(2-aminophenyl)-9H-carbazole has been furnished with excellent regioselectivity, exceptional functional group tolerance, and tolerated large-scale synthesis. Furthermore, one-pot syntheses of quino[3,4-a]carbazoles have been
这里报道的是一种高效的 Friedel-Crafts 型反应,随后在空气气氛下进行电环化级联反应,使用现成的结构单元作为起始材料,
乙醇作为溶剂,Brønsted 酸作为催化剂。基于级联策略,2-(2-
氨基苯基)-9 H-
咔唑具有优异的区域选择性、优异的官能团耐受性和耐受的大规模合成。此外,已经完成了喹并[3,4- a ]
咔唑的一锅法合成,证明了该策略在合成有价值的杂芳基环[ a ]
咔唑中的广泛合成效用。