N-Heterocyclic Carbene Catalyzed Domino Reactions of Formylcyclopropane 1,1-Diesters: Construction of a 6-5-5 Tricyclic Pyrrolo[1,2-a]indole
作者:Linxia Li、Ding Du、Jun Ren、Zhongwen Wang
DOI:10.1002/ejoc.201001364
日期:2011.1
Catalyzed by N-heterocycliccarbenes (NHCs), a domino ring-opening/redox amidation/Knoevenagel condensation of readily available formylcyclopropane1,1-diesters with 1H-indole-2-carbaldehydes is reported. This methodology provides a new and direct method for the construction of a 6-55 tricyclicpyrrolo[1,2-a] indole skeleton.