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Título: | Highly enantioselective hydrogenation of N-aryl imines derived from acetophenones by using Ru-pybox complexes under hydrogenation or transfer hydrogenation conditions in isopropanol |
Autor: | Menéndez-Pedregal, E.; Vaquero, Mónica; Lastra, Elena; Gamasa, María Pilar; Pizzano, Antonio CSIC ORCID | Palabras clave: | Transfer hydrogenation Asymmetric catalysis Amines Hydrogenation Ruthenium |
Fecha de publicación: | 2015 | Editor: | John Wiley & Sons | Citación: | Chemistry - A European Journal 21: 549- 553 (2015) | Resumen: | © 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. The asymmetric reduction of N-aryl imines derived from acetophenones by using Ru complexes bearing both a pybox (2,6-bis(oxazoline)pyridine) and a monodentate phosphite ligand has been described. The catalysts show good activity with a diverse range of substrates, and deliver the amine products in very high levels of enantioselectivity (up to 99%) under both hydrogenation and transfer hydrogenation conditions in isopropanol. From deuteration studies, a very different labeling is observed under hydrogenation and transfer hydrogenation conditions, which demonstrates the different nature of the hydrogen source in both reactions. | URI: | http://hdl.handle.net/10261/109951 | DOI: | 10.1002/chem.201405276 | Identificadores: | doi: 10.1002/chem.201405276 issn: 1521-3765 |
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