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Título: | Production of chiral alcohols from racemic mixtures by integrated heterogeneous chemoenzymatic catalysis in fixed bed continuous operation |
Autor: | Carceller, Jose Miguel; Mifsud, María CSIC; Climent Olmedo, María José; Iborra Chornet, Sara; Corma, Avelino CSIC ORCID | Fecha de publicación: | 24-feb-2020 | Editor: | Royal Society of Chemistry (UK) | Citación: | Green Chemistry 22(9): 2767-2777 (2020) | Resumen: | Valuable chiral alcohols have been obtained from racemic mixtures with an integrated heterogeneous chemoenzymatic catalyst in a two consecutive fixed catalytic bed continuous reactor system. In the first bed the racemic mixture of alcohols is oxidized to the prochiral ketone with a Zr-Beta zeolite and using acetone as the hydrogen acceptor. In the second catalytic bed the prochiral ketone is stereoselectively reduced with an alcohol dehydrogenase (ADH) immobilized on a two dimensional (2D) zeolite. In this process, the alcohol (isopropanol) formed by the reduction of acetone in the first step reduces the cofactor in the second step, and the full reaction cycle is in this way internally closed with 100% atom economy. A conversion of about 95% with ∼100% selectivity to either the (R) or the (S) alcohol has been obtained for a variety of racemic mixtures of alcohols. | Versión del editor: | http://dx.doi.org/10.1039/c9gc04127c | URI: | http://hdl.handle.net/10261/227131 | DOI: | 10.1039/c9gc04127c | Identificadores: | doi: 10.1039/c9gc04127c issn: 1463-9270 |
Aparece en las colecciones: | (ITQ) Artículos |
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Production_of_chiral.pdf | 439,33 kB | Adobe PDF | Visualizar/Abrir |
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