1125534-75-9Relevant academic research and scientific papers
New tripodal iminophosphorane-based ethylene oligomerization catalysts. Part II. Catalytic behavior
Beaufort, Laurence,Benvenuti, Federica,Delaude, Lionel,Noels, Alfred F.
, p. 77 - 82 (2008/10/09)
Seven transition-metal complexes of general formula RC (C H2 NP R′3)3) M X2 based on new tripodal iminophosphorane ligands were investigated as initiators for the oligomerization of ethylene in the presence of aluminum co-catalysts using high-throughput techniques. In all cases, ethylene consumption peaked at ca. 30 °C and was not drastically affected by varying the nature of the metal (M = Ni, Fe, Pd, Cu), the aluminum co-catalyst (MMAO, Et2AlCl, or EtAlCl2) or the substituents of the tris(iminophosphorane) ligand (R = Me, Ph; R′ = cyclopentyl, Ph). Structural modifications of the organometallic complexes, either at the metal center or within the tripodal ligand, however, had a significant impact on the oligomer distribution obtained. In particular, Pd-based catalyst (PhC(CH2NPPh3)3)PdCl2 displayed an excellent selectivity toward hexene formation.
