Development of High Functional Polyolefin by Utilizing Isomerization Polymerization Catalyzed by Palladium Complex

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Syntheses of polymers having functional groups with controlled density and distribution were conducted using isomerization polymerization of olefins catalyzed by diimine palladium complexes. The diimine palladium complexes promote isomerization polymerization of non-conjugated dienes and trienes, alkylcyclopentenes, and alkenylcyclohexanes to afford the polymers containing five- or six-membered rings with high stereoregularity. Changing the length of alkyl group in the monomer allows accurate control of the density and distribution of the cycloalkane groups in the polymer. Isomerization polymerization of trienes affords the polymers with two cyclopentanes having different functional groups in alternating manner along the polymer chain.