A synthetic use of the intramolecular alkyl migration process in indolylborates for intramolecular cyclization: a novel construction of carbazole derivatives
作者:Minoru Ishikura、Hiromi Kato
DOI:10.1016/s0040-4020(02)01293-0
日期:2002.12
reaction in indolylborates was developed for the one-pot construction of carbazoles via intramolecular cyclization in which π-allylpalladium complexes were successfully adopted as an acceptor for the indolenucleophile.
palladium-catalyzed cross-coupling reaction between 2-susbtituted indole and allyltrimethylsilanes in the absence of fluoride anion source was studied. The optimal conditions for the reaction were identified after various reaction conditions examined, using Pd(OAc)2 as the catalyst, Cu(OTf)2 as oxidant, and DMSO as solvent, leading to the synthesis of a series of benzindoles bearing allylgroup in good to high yields