Abstract
A variety of palladium(II)–acetylacetonate complexes bearing α-diimine ligands were synthesized by the reaction of [Pd(acac)(MeCN)2]BF4 with N⁀N ligands. When activated with BF3·OEt2, these complexes provide access to a new class of alkylating agent free Pd–diimine catalyst systems. Catalyst screening for the vinyl addition polymerization of norbornene showed their high activities of 102–104kgpolmolcat−1h−1.
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