Synthesis and reactivity of metal-containing monomers 64. Synthesis, structure, polymerization, and catalytic properties of the palladium and cobalt vinylporphyrin complexes

Abstract

2-Vinylporphyrin and its complexes with PdII and CoII were synthesized and characterized by NMR, IR, and mass spectra. The palladium vinylporphyrin complexes are efficient metal-containing monomers in radical copolymerization with styrene. Palladium(II) in an amount of up to 1 mol.% can thus be introduced into the polymers. The synthesized polymeric Pd complexes perform the photosynthesized activation of dioxygen to the lowest excited singlet state, which is an active oxidizing agent for anthracene producing the 1,4-addition products. The monomeric and macromolecular cobalt complexes are chain-transfer catalysts in radical styrene polymerization.