the first example of the synthesis of carbazoles via oxidative cyclization of 3-alkenylindoles with styrenes under visible light. The irradiation of a catalytic amount of [Ir(dtbbpy)(ppy)2][PF6] as the photocatalyst enables various 3-alkenylindoles and styrenes to undergo tandem [2 + 2] cycloaddition/rearrangement, thereby leading to carbazole derivatives in good to excellent yields under aerobic conditions
本文报道的是在可见光下通过3-烯基
吲哚与
苯乙烯的氧化环化合成
咔唑的第一个实例。辐照催化量的[Ir(dtbbpy)(ppy)2 ] [PF 6 ]作为光催化剂,可使各种3-烯基
吲哚和
苯乙烯进行串联[2 + 2]环加成/重排,从而得到良好的
咔唑衍
生物在有氧条件下达到优异的产量。机理研究表明,光诱导的能量转移随后是电子转移是串联反应的原因。