Cationic palladium(ii)-acetylacetonate complexes bearing pyridinyl imine ligands as catalysts for the hydroamination of phenylacetylene and polymerization of norbornene

摘要

Acetylacetonate palladium(ii) complexes bearing pyridinyl imine ligands Pd(acac)(L)BF4 were synthesized via nitrile displacement in Pd(acac)(MeCN)2BF4 by the bidentate ligands L of type 2-C5H4N-CH=N-(CH2)nOMe or 2-C5H4N-CH=N-Ar. The structures of complexes were analyzed by X-ray diffractometry, NMR, and DFT. The complexes catalyze hydroamination of phenylacetylene with aniline to give the Markovnikov imine product as well as polymerization of norbornene. Me Me O O Pd MeCN MeCN + BF4- NN CH2Cl2 room temperature Me Me O Pd O N N R + BF4- Catalysts for hydroamination of PhC and polymerization of norbornene CH