SYNTHESIS AND MOLECULAR-STRUCTURE OF PHOSPHORUS-SULFUR HYBRID ATOM LIGAND AND THEIR PALLADIUM COMPLEXES WITH THE STUDIES ON THE C-H BOND ACTIVATION AND PHOTOCHEMICAL CARBONYLATION REACTION OF BENZENE

In this paper, a novel and ideal synthetic method of the phosphorus and sulfur hybrid atom ligand is reported. The speciality of this method is that the by-products of some reactions could be used circularly as starting materials in the synthetic route. Further, we synthesized a series of organopalladium complexes containing these hybrid atom chelate ligands, among them the molecular structures of novel organopalladium complexes Pd((i-Pr)2-P(CH2)2SEt)Cl2, Pd(Et2P(CH2)2SEt)Cl2 and Pd(Ph2P(CH2)2SEt)Cl2 were determined by using the X-ray single crystal diffraction method. We first used the organotransition metal complexes containing phosphorus and sulfur hybrid atom ligands to activate the sigma-C-H bond, and researched the catalytic activity, i.e. the photochemical carbonylation of benzene was catalyzed by these palladium complexes.