Ligand-free C-N bond formation in aqueous medium using a reusable Cu-Mn bimetallic catalyst

A general ligand-free protocol has been described for the recyclable and reusable Cu-Mn catalyzed C-N bond forming cross coupling reaction of arylboronic acids with various amines to form N-arylated amine products in aqueous medium affording excellent yields under ambient conditions, in 3-4 h. (C) 2013 Elsevier Ltd. All rights reserved.