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Journal of the American Chemical Society

Palladium-catalyzed copolymerization of ethene with acrolein dimethyl acetal: catalyst action and deactivation.


PMID 15453740

Abstract

Acrolein dimethyl acetal (ADMA) can be copolymerized with ethene using a cationic alpha-diimine palladium chelate catalyst to yield branched copolymers. Catalyst deactivation occurs via methanol elimination to give an inert eta3-1-methoxyallyl palladium species. This process can be retarded by the addition of an aliquot of methanol to the reaction mixture, increasing overall catalyst productivity.

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