OXIDATIVE ADDITION OF CHLOROBENZENE ON AN IRON-CYCLOPENTADIENYL CATION TO A LOW-VALENT PALLADIUM COMPLEX

The oxidative addition of the coordinated chlorobenzene in [CpFe(C6H5Cl)][PF6] to Pd(PPh3)4 proceeds under THF-reflux conditions to give [CpFe{eta-6-[PdCl(PPh3)2]C6H5}][PF6]. X-ray analysis of this complex revealed that the phenyl ring is sigma-bound to Pd and pi-bound to Fe, and that the palladium center takes the cis-configuration. This complex reacts with CO/MeOH, CO/HNEt2, styrene, and methyl acrylate to give methyl benzoate, N,N-diethylbenzamide, stilbene, and methyl cinnamate, respectively, after photolysis.