New Imine−Phosphine Palladium Complexes Catalyze Copolymerization of CO−Ethylene and CO−Norbornylene and Provide Well-Characterized Stepwise Insertion Intermediates of Various Unsaturated Substrates

Abstract

New imine−phosphine palladium complexes [Pd(P−N)(CH3)(CH3CN)](BF4) (P−N = o-(diphenylphosphino)-N-benzaldimine derivatives) are synthesized and are found to be active for copolymerization of CO−ethylene and CO−norbornylene, respectively. Stepwise addition of carbon monoxide and various olefins into the new complexes is investigated.