The reaction of N‐methylimidazole (N‐MeIm) and N‐butylimidazole (N‐BuIm) with the complexes [PdCl2(PPh2py–P,N)] and [PdCl2(PPh2Etpy–P,N)] in the presence of NH4PF6 under N2 at room temperature afforded four new cationic Pd(II) complexes [PdCl(PPh2py–P,N)(N‐MeIm)](PF6) (1), [PdCl(PPh2py–P,N)(N‐BuIm)](PF6) (2), [PdCl(PPh2Etpy–P,N)(N‐MeIm)](PF6) (4) and [PdCl(PPh2Etpy‐P,N)(N‐BuIm)](PF6) (5) in good yields, where PPh2py is 2‐(diphenylphosphino)pyridine and PPh2Etpy is 2‐{2‐(diphenylphosphino)ethyl}pyridine). The complexes were fully characterized. The catalytic activities of these complexes were investigated for Suzuki–Miyaura cross‐coupling reactions at room temperature. Complex 2 exhibited excellent activity compared to other analogs. Copyright © 2013 John Wiley & Sons, Ltd.

No abstract

No abstract

Three rhodium(I) complexes of the types [Rh(COE)Cl(η2‐L)] (1a,1b) and [RhCl(η2‐L) (η1‐L)] (1c), where L = P~N donor ligands 2‐[2‐(diphenylphosphino) ethyl]pyridine, (PPh2Etpy) (a), 2‐(diphenylphosphino)pyridine (PPh2py) (b), and 3‐(diphenylphosphino)‐1‐propylamine (PPh2(CH2)3NH2) (c), have been synthesized by reacting [Rh(coe)2Cl]2 with the respective ligands in 1:2 molar ratio for 1a, 1b and 1:4 molar ratio for 1c in DCM under refluxing condition. The complexes were characterized using different analytical techniques such as FT‐IR, ESI(+) mass spectrometry, 1H and 31P{ 1H} NMR spectrometry, conductivity measurements, and melting point determination. The synthesized complexes were found to exhibit good catalytic activity for the transfer hydrogenation of carbonyl compounds to corresponding alcohols with high conversion rate.