NiCl 2·6H 2O as recyclable heterogeneous catalyst for N-arylation of amines and NH-heterocycles under microwave exposure

Abstract

NiCl 2·6H 2O has been proven to be an effective catalyst for the coupling of amines with aryl iodides without ligand under solvent-free conditions employing microwave irradiation. Reactions cleanly result in coupled products in a short reaction time. The catalyst, being heterogeneous, is recovered by filtration and is recyclable. © 2012 Elsevier Ltd. All rights reserved.