Homogenous bimetallic catalysis on amination of ArX and ArX2 in aqueous medium-synergistic effect of dicopper complexes
Journal
Catalysis Communications
Journal Volume
32
Pages
28-31
Date Issued
2013
Author(s)
Liao, B.-S.
Abstract
A dicopper complex [Cu2(bpnp)(OH)(CF3COO) 3] (1) (bpnp = 2,7-bis(pyridin-2-yl)-l,8-naphthyridine) was found to be an excellent catalyst on amination of aryl halides and aryl dihalides with ammonia in aqueous solutions leading to the corresponding anilines and aryldiamines, respectively. Catalytic activity of 1 toward amination appears to be superior to those of other mono nuclear copper complexes. Furthermore, the bimetallic catalyst 1 gave exclusively diamination product in the reaction of ArX2 with ammonia, but other copper complexes showed poor selectivity. Kinetic product distribution study suggests that the dicopper metal ions in this catalysis promote the second amination efficiently. © 2012 Elsevier B.V.
Type
journal article