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Enantioselective hydrogenation of isophorone over Pd catalysts in the presence of(−)-dihydroapovincaminic acid ethyl ester: The effect of reduction method of Pd blacks on the enantiomeric excess |
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| Authors: | G Farkas Sípos A Tungler A Srkny J L Figueiredo |
| Institution: | a Institute of Isotopes, Chemical Research Center of the Hungarian Academy of Sciences, P.O. Box 77, H-1525 Budapest, Hungary b Laboratório de Catálise e Materiais, Chemical Engineering Department, Faculty of Engineering, University of Porto, 4050-123 Porto, Portugal c Department of Chemical Technology, Technical University of Budapest, H-1521 Budapest, Hungary |
| Abstract: | The enantioselective heterogeneous catalytic hydrogenation of isophorone in the presence of apovincaminic acid ethyl ester was investigated. Various Pd black catalysts differing in their preparation method were studied. The catalysts were characterized by different methods such as physical adsorption and chemisorption, SEM and XPS. An explanation was created for the different enantioselectivity of the catalysts being precipitated by different reducing agents. |
| Keywords: | Pd black catalysts Enantioselective hydrogenation Isophorone |
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