Isocyanide insertion into the palladium–carbon bond of [PdMe(L–L)Cl] complexes and the reactivity of the products toward norbornadiene; X-ray crystal structure of [Pd{C(NC6H3Me2-2,6)Me}(bpy)Cl][L-L = bpy or phen]

Abstract

The first examples of isocyanide insertion into methyl-palladium-chloride complexes containing 2,2′-bipyridine (bpy) and phenanthroline (phen), the X-ray crystal structure of [Pd{C(NC₆H₃Me₂-2, 6)Me}(bpy)Cl] and the novel insertion of norbornadiene into the Pd–C(NR)Me bond are presented; the insertion mechanism of isocyanides involves displacement of the chloride and a subsequent, slower migration of the methyl group to the precoordinated isocyanide.