Alkaloid-induced asymmetric hydrogenation on bimetallic Pt@Cu cathodes under electrochemical conditions
| Autor: | Man-Ping Yang, Huan Wang, Ying-Na Yue, Jia-Xing Lu, Di Wu, Sheng Zeng |
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| Rok vydání: | 2017 |
| Předmět: |
Chemistry
Asymmetric hydrogenation Inorganic chemistry Enantioselective synthesis chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Catalysis 0104 chemical sciences chemistry.chemical_compound Materials Chemistry 0210 nano-technology Cinchonidine Enantiomeric excess Platinum Bimetallic strip Acetophenone |
| Zdroj: | New Journal of Chemistry. 41:7853-7856 |
| ISSN: | 1369-9261 1144-0546 |
| DOI: | 10.1039/c7nj00844a |
| Popis: | Bimetallic Pt@Cu nanoparticles (NPs) with low Pt loading obtained by reducing platinum precursors on Cu NPs were coated on carbon paper and used as a cathode for asymmetric hydrogenation by the electrochemical method. The Pt@Cu NPs exhibited enhanced catalytic performance in ketone electrohydrogenation. The enantioselective electrohydrogenation of pro-chiral aromatic ketones (2,2,2-trifluoroacetophenone, acetophenone, 2-phenylacetone, 4-methylacetophenone) induced by cinchonidine alkaloids was investigated in an undivided cell to obtain optically active alcohols. Optically active α-(trifluoromethyl)benzyl alcohols with 59% enantiomeric excess and 25% yield were obtained. All experimental procedures were performed under mild conditions, that is, without the utilization of high temperature and pressure. The Pt@Cu NPs showed excellent stability and reusability. |
| Databáze: | OpenAIRE |
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