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Iridium and rhodium complexes with the planar chiral thioether ligands in asymmetric hydrogenation of ketones and imines |
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| Authors: | E M Kozinets G A Silantyev N V Belkova E S Shubina R Poli E Manoury |
| Institution: | 1. A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 119991, Moscow, Russian Federation 2. Laboratory of Coordination Chemistry, National Center of Scientific Studies, 205 Route de Narbonne, 31077, Toulouse, France 3. P. Sabatier University, 205 Route de Narbonne, 31077, Toulouse, France 4. University Institute of France, 103 bd. Saint-Michel, 75005, Paris, France |
| Abstract: | Rhodium complexes with the planar chiral phosphinoferrocenyl thioether ligands Rh(P,SR)(diene)X] (R = Me, But, Ph, Bn, diene is cyclooctadiene (COD) or norbornadiene (NBD), X = Cl, BF4) catalyze hydrogenation of ketones, imines, and heteroaromatic compounds; in the case of acetophenone, the enantioselectivity reached 60% ee. Similar iridium complexes demonstrate a good activity in the hydrogenation of imines, the maximal enantioselectivity in the case of N-phenyl-N-(1-phenylethylidene)amine was about 40% ee. |
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