Palladium catalyzed tandem alkenyl- and aryl-C–N bond formation: a cascade N-annulation route to 4-, 5-, 6- and 7-chloroindoles
摘要:
A series of trihalogenated alkenylbenzenes undergo consecutive palladium catalyzed inter- and intramolecular amination reactions to deliver a series of 1-functionalized mono-chloroindoles. 4-, 5-, 6- and 7-Chloroindoles can all be prepared: carbamates, anilines and amines can be employed as the N-nucleophile. (C) 2010 Elsevier Ltd. All rights reserved.