Effect of phosphine–CS2 adducts on the nickel-catalyzed butenes oligomerization in organochloroaluminate imidazolium ionic liquids

Souza, Roberto Fernando de; Thiele, Daniel; Monteiro, Adriano L.

doi:10.1016/j.jcat.2006.04.019

Cited by 10 publications

(9 citation statements)

References 12 publications

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“…Some examples include the stabilization of reactive phosphines, [5] enhancement of oligomerization and/or polymerization reactions, [6] as precursors to more complex organic molecules, [7] and as ligands for transition metal complexes. [8] It is somewhat surprising, therefore, that only half a dozen crystal structures of R 3 P-CS 2 adducts have been published.…”

Section: Introductionmentioning

confidence: 99%

Zwitterionic CS2 Adducts of Bis(dialkylphosphino)amines: Syntheses, Spectroscopy, and Structures

2015

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Both bis(diisopropylphosphino)amine and bis(di-t-butylphosphino)amine react with CS 2 to give bright red zwitterionic adducts of the form R 2 P(CS 2 )NP(R 2 )H (R ¼ i Pr or t Bu). The P-H tautomer is the exclusive species present in solution, and there is no evidence of CS 2 lability. The tautomeric hydrogen can undergo exchange with deuterium in protic solvents such as CD 3 OD. The products were characterized by single-crystal X-ray diffraction, IR and multinuclear ( 1 H, 2 H, 13 C, 31 P) NMR spectroscopies. * In memory of Professor Richard F. Langler, whose students, including DAD, will remember him for the high expectations he set for them in the classroom and in research, and the high standards to which he held them. His work with undergraduates has inspired us to train many young scientists, and we note that our coauthor RPUS was a high school student when he performed many of the experiments described in this work.

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Section: Introductionmentioning

confidence: 99%

Zwitterionic CS2 Adducts of Bis(dialkylphosphino)amines: Syntheses, Spectroscopy, and Structures

2015

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“…Chloroaluminate ILs, composed of imidazolium [22][23][24][25][26][27][28][29][30][31][32][33][34] or pyridinium [33,35] halides, AlCl 3 and, in most cases, an alkylaluminum compound (AlEtCl 2 or AlEt 2 Cl), act both as a medium for catalyst immobilization and nickel activator ( Table 4). The cationic nickel active species is immobilized in the ionic phase without the need of a special ligand.…”

Section: Oligomerization With Ni Catalystsmentioning

confidence: 99%

The Use of Ionic Liquids in the Oligomerization of Alkenes

Fehér¹,

Kriván²,

Eller³

et al. 2014

Oligomerization of Chemical and Biological Compounds

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“…The buffer plays an important role in high dimer selectivity 4–7. An industrial process that uses ionic liquids as a solvent for the catalyst is the Difasol process developed by IFP 1, 6–12.…”

Section: Introductionmentioning

confidence: 99%

Recycling and Oligomerization Activity of Ni/Al Catalyst in a Biphasic System with Ionic Liquids

et al. 2016

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The catalyst decomposition in homogeneously catalyzed reactions is a very important factor that has been studied for the oligomerization of n-butenes in a system of two liquid phases. A highly active catalyst [NiCl 2 (PMe 3 ) 2 ] was investigated with an emphasis on the long-term catalyst activity using N-methylpyrrole as a buffer. The recycling experiments indicated that this catalyst is viable for five runs. Furthermore, introducing aluminum chloride or an ionic liquid in small concentrations led to increased stability, though fine adjustments were necessary to arrive at optimal results.

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Effect of phosphine–CS2 adducts on the nickel-catalyzed butenes oligomerization in organochloroaluminate imidazolium ionic liquids

Cited by 10 publications

References 12 publications

Zwitterionic CS2 Adducts of Bis(dialkylphosphino)amines: Syntheses, Spectroscopy, and Structures

Zwitterionic CS2 Adducts of Bis(dialkylphosphino)amines: Syntheses, Spectroscopy, and Structures

The Use of Ionic Liquids in the Oligomerization of Alkenes

Recycling and Oligomerization Activity of Ni/Al Catalyst in a Biphasic System with Ionic Liquids

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