Cyclic Carbene-Palladium(II) Complexes Derived from The Reactions of Isocyanide-Palladium(II) Complexes with Nitrilimines and Nitrilylides

Article abstract of DOI:10.1246/bcsj.54.800

cis- (R1 = Ph or Et) reacts with nitrilimines or nitrilylides, derived from the reactions of either N-phenylarenecarbohydrazonoyl chlorides or N-(p-nitrobenzyl)arenecarboximidoyl chlorides with triethylamine, to afford novel cyclic carbene-palladium(II) complexes, viz. 1,2,4-triazol-5(4H)-ylidene- or 2-imidazolin-5-ylidenepalladium(II) ones, respectively.Halogen exchange reactions of the carbene complexes with lithium bromide or sodium iodide give the corresponding dibromo- or diiodocarbene complexes, respectively. trans- also reacts with the nitrilimine or the nitrilylide to produce cyclic carbene-palladium(II) complexes.All the complexes prepared in this study are characterized by elemental analysis, IR and 1H-NMR.