Regular Issue

Vol. 16, No. 9, 1981

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Review | Regular issue | Vol 16, No. 9, 1981, pp. 1603 - 1612
Published online:
DOI: 10.3987/R-1981-09-1603
Organopalladium (II) Complexes Containing Carbon-bonded Pyridine and Picoline as a Ligand: Preparation, Structures, and Reactions

Kiyoshi Isobe and Shinichi Kawaguchi*

*Department of Chemistry, Faculty of Science, Osaka University, Toyonaka, Osaka 560-8531, Japan


Oxidative addition reactions of monohalopyridines, 2,6-dichloropyridine, 2-chloropyrazine, and 2-chlorobenzothiazole as well as 2- and 3-chloromethylpyridines with tetrakis(triphenylphosphine)palladium(0) gave [PdX(R) (PPh3)]2 or [PdX(R) (PPh3)2] depending on the nature of the carbon-bonded heterocycles R. Most of these novel organopalladium(II) complexes were characterized by the analytical, molecular-weight, and IR data together with the 1H and 13C NMR spectroscopy. The molecular structures of some pyridyl and picolyl complexes were determined by X-ray analysis to reveal the novel C,N-bridging modes of the 2-pyridyl and 2-picolyl ligands. Reactions of these complexes with carbon monoxide and other reagents were examined. The pyridyl complexes catalyze the cross coupling reactions between halopyridines and methylmagnesium bromide.

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