Mixed heteropentadienyl and N-heterocyclic carbene ruthenium(II) complexes: Synthesis and transfer hydrogenation catalysis
| Autor: | Juan Olguín, M. Angeles Paz-Sandoval, Mónica Díaz-Fernández, José Ignacio de la Cruz-Cruz |
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| Rok vydání: | 2016 |
| Předmět: |
Denticity
010405 organic chemistry Ligand Organic Chemistry chemistry.chemical_element Mixed ligand 010402 general chemistry Transfer hydrogenation 01 natural sciences Biochemistry Medicinal chemistry 0104 chemical sciences Catalysis Ruthenium Inorganic Chemistry chemistry.chemical_compound chemistry Materials Chemistry Benzophenone Organic chemistry Physical and Theoretical Chemistry Carbene |
| Zdroj: | Journal of Organometallic Chemistry. 824:33-41 |
| ISSN: | 0022-328X |
| DOI: | 10.1016/j.jorganchem.2016.09.031 |
| Popis: | Two synthetic methodologies for obtaining novel mixed heteropentadienyl and N-heterocyclic carbenes (NHC) ruthenium(II) complexes have been explored. A synthetic strategy involving the addition of heteropentadienyl precursors to [RuII]-NHC complexes proved to be a successful route for the isolation of four novel mixed ligand complexes, namely stereoisomers [(p-cymene)RuII(BuImMe)(η3-exo-syn-CH2CHCHCHO)]BF4 (3 and 3′, BuImMe = 1-butyl-3-methylimidazolyl-2-idene) and [(η1-CH2CHCRCHSO2)RuII(PyImMe)(CH3CN)3](A) (PyImMe = 3-methyl-1-(2-pyridyl)imidazolyl-2-idene, R = H, A = BF4, 6; R = CH3, A = PF6, 7). Moreover complex 6 has been characterised by X-ray crystallography confirming the sulphur-bound monodentate nature of CH2CHCHCHSO2 ligand adopting an S-conformation. Complexes 6 and 7 were tested as pre-catalysts in the transfer hydrogenation reaction of benzophenone, showing moderate and good activities, respectively. |
| Databáze: | OpenAIRE |
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