Articulo
Lewis Acid Enhanced Ethene Dimerization and Alkene Isomerization-ESI-MS Identification of the Catalytically Active Pyridyldimethoxybenzimidazole Nickel(II) Hydride Species
Fecha
2015Registro en:
1150307
WOS:000366153300033
Institución
Resumen
A cationic methallyl 2-pyridine-4,7-dimethoxybenzimidazole (L1) nickel precatalyst is highly selective in ethene dimerizations to 1-butene. The same catalyst isomerizes 1-butene and 1-octene to internal olefins. Co-catalytic additives of B(C6F5)(3) or BF3 center dot OEt2 coordinate to the catalyst and increase the reaction rates of ethene dimerization. ESI-MS was applied identifying a [L1NiH](+) cation as the catalytically active species.