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Ru/BEA CATALYSTS FOR SELECTIVE AND STEREO SELECTIVE HYDROGENATION OF PROSTAGLANDIN INTERMEDIATES

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Author(s): Simona M. Coman

Journal: Analele Universitatii Bucuresti : Chimie
ISSN 1220-871X

Volume: XIV;
Issue: I-II;
Start page: 33;
Date: 2005;
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ABSTRACT
Ru-BEA catalysts with 5.0wt% Ru were prepared following an “ionic exchange” procedure.These catalysts were investigated using pyridine (Py), 2,6-di-tert-butyl-pyridine (DTBPy), COFT-IR spectroscopy and H2-chemisorption and were tested in the diastereoselectivehydrogenation of a prostaglandin intermediate enone. The relation between the activity, thechemoselectivity to allylic alcohol, the diastereoselectivity, and the metal particle size and theacidity of the support was investigated. The effect of the hydrogen pressure, the substrate/Ruratio and the reaction time was also studied. It was found that by modification of these propertiesand of the reaction parameters it is possible to “tune” the activity and selectivity of the catalystin the investigated hydrogenation reaction.
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