3-Aminoiminoacrylate, 3-Aminoacrylate, and 3-Amidoiminomalonate Complexes as Catalysts for the Dimerization of Olefins
作者:Martin E. Bluhm、Cristina Folli、Daniela Pufky、Mario Kröger、Olaf Walter、Manfred Döring
DOI:10.1021/om049075s
日期:2005.8.1
Nickel(II)-aminoacrylate, -aminoiminoacrylate, and -amidoiminomalonate complexes 1-4 are suitable precursors together with appropriate cocatalysts for the catalytic dimerization of ethylene, propylene, and alpha-olefins with short chain lengths such as 1-hexene. Suitable ligands IV-VI, VIII, X, and XII generate nickel(II) compounds 1-4 active for these catalytic dimerizations. The influence of different substituents attached to the coordinating ligand backbone is tested in the catalytic reactions. Several novel monodentate and chelate nickel(II) precursor complexes 1 and 3 were isolated and also characterized by X-ray structure analysis.