Selective hydrogenation of the CO bond of ketones using Ni(0) complexes with a chelating bisphosphine
| Autor: | Juventino J. García, David Morales-Morales, Brian A. Warsop, Paulina Pinedo-González, Miguel A. Muñoz-Hernández, Areli Flores-Gaspar, William D. Jones, Marco G. Crestani |
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| Rok vydání: | 2009 |
| Předmět: |
chemistry.chemical_classification
Ketone Stereochemistry Process Chemistry and Technology chemistry.chemical_element Homogeneous catalysis Medicinal chemistry Catalysis chemistry.chemical_compound Nickel chemistry Transition metal Hydrogenolysis Benzophenone Diphosphane Physical and Theoretical Chemistry |
| Zdroj: | Journal of Molecular Catalysis A: Chemical. 309:1-11 |
| ISSN: | 1381-1169 |
| Popis: | The nickel complexes [(dippe)Ni(η2-O,C-benzophenone)] (2), [(dippe)Ni(η2-O,C-4-methylbenzophenone)] (3), [(dippe)Ni(η2-O,C-acetophenone)] (4), [(dippe)Ni(η2-O,C-acetone)] (5), [(dippe)Ni(η2-O,C-fluorenone)] (6), [(dippe)Ni(η2-O,C-di(2-pyridyl) ketone)] (7a) [(dippe)Ni(κ2-N,N-di(2-pyridyl) ketone)] (7b), [(dippe)Ni(κ2-O,O-2,2′-pyridil)] (8), [(dippe)Ni(κ2-O,O-benzil)] (9a), and [((dippe)Ni)2(η2-O,C-benzil)] (9b) were prepared by the reaction of [(dippe)Ni(μ-H)]2 (1) with the corresponding ketone or 1,2-diketone at room temperature. The structures of compounds 2, 6, 9a and 9b were confirmed by X-ray crystallography. The selective hydrogenation of the two types of substrates was undertaken using H2, giving high conversions to the corresponding reduction products, either alcohols or alkanes. Tunable reaction conditions to promote the partial or total hydrogenation (hydrogenolysis) of the substrates are described. |
| Databáze: | OpenAIRE |
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