Pd(II) complexes of Schiff bases and their application as catalysts in Mizoroki-Heck and Suzuki-Miyaura cross-coupling reactions

Abstract

Schiff bases of 2-(phenylthio)aniline, (C6H5)SC6H4NCR (R=(o-CH3)(C6H5), (o-OCH3)(C6H5) or (o-CF3)(C6H5)), and their palladium complexes (PdLCl2) were synthesized. The compounds were characterized using H-1 NMR and C-13 NMR spectroscopy and micro analysis. Also, electrochemical properties of the ligands and Pd(II) complexes were investigated in dimethylformamide-LiClO4 solution with cyclic and square wave voltammetry techniques. The Pd(II) complexes showed both reversible and quasi-reversible processes in the -1.5 to 0.3V potential range. The synthesized Pd(II) complexes were evaluated as catalysts in Mizoroki-Heck and Suzuki-Miyaura cross-coupling reactions. Copyright (c) 2015 John Wiley & Sons, Ltd.