NEW PALLADIUM-CATALYZED AND NICKEL-CATALYZED POLYCONDENSATIONS FOR SYNTHESIS OF CARBON-CARBON CHAIN POLYMERS, POLYAMIDES, AND RELATED CONDENSATION POLYMERS

This article reviews our current work on the palladium- and nickel-catalyzed polycondensations for the synthesis of various types of condensation polymers. We succeeded for the first time in the synthesis of carbon-carbon coupling polymers, that is polycinnamamides, by the palladium-catalyzed cross-coupling polycondensation of aromatic diiodides with divinylic compounds. We further developed a new promising method of the synthesis of aramids and related condensation polymers by the palladium-catalyzed carbonylation polycondensation starting from aromatic dibromides, bifunctional nucleophilic monomers such as aromatic diamines, and carbon monoxide.