Ru(<scp>ii</scp>)-catalyzed synthesis of indolo[2,3-<i>c</i>]isoquinolines <i>via</i> [3+3] annulation of <i>N</i>,<i>N</i>′-cyclic azomethine ylides and 3-diazoindolin-2-imines
the construction of fused α-carboline or indolo[2,3-c]isoquinoline frameworks from easily synthesizable N,N′-cyclic azomethine ylides and 3-diazoindolin-2-imines using a Ru(II) catalyst is reported. This strategy was found to be efficient and effective for the syntheses of a variety of fused polycyclic molecules with a wide substrate scope, mild reaction conditions, and good to excellent yields. In addition
一种简便的[3+3]环化方法,用于使用Ru从易于合成的N,N'-环状偶氮甲碱叶立德和3-重氮吲哚啉-2-亚胺构建稠合α-咔啉或吲哚并[2,3- c ]异喹啉框架( II )催化剂报道。该策略被发现对于合成多种稠合多环分子是高效且有效的,具有广泛的底物范围、温和的反应条件以及良好至优异的产率。此外,通过 ESI-MS 分析进行各种对照实验,研究了这种转化的机制途径。