One pot selective hydrogenation and dynamic kinetic resolution over Cu/Al2O3: A way to (-)-menthol starting from low value mint oils
Articolo
Data di Pubblicazione:
2006
Citazione:
One pot selective hydrogenation and dynamic kinetic resolution over Cu/Al2O3: A way to (-)-menthol starting from low value mint oils / Nicoletta Ravasio, Federica Zaccheria, Achille Fusi, Rinaldo Psaro. - In: APPLIED CATALYSIS A: GENERAL. - ISSN 0926-860X. - 315(2006), pp. 114-119. [10.1016/j.apcata.2006.09.010]
Abstract:
Different Cu catalysts have been used for the hydrogenation of very low value mint oils, namely, dementholized cornmint oil and Spanish pennyroyal oil. During the hydrogenation of dementholized oil Cu/Al2O3 showed the best activity and selectivity towards a mixture of menthols, while stereoselectivity toward the valuable isomer (-)-menthol can be improved by selectively dehydrogenating the products mixture. In the hydrogenation of pulegone and pennyroyal oil Cu/Al2O3 showed an unprecedented activity allowing complete transformation of the substrate into menthols under very mild experimental conditions (1 atm H-2, 90 degrees C). Moreover, a dynamic kinetic resolution process taking place during the hydrogenation step, allows to enrich the mixture in (-)-menthol.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
copper catalysts ; renewables ; essential oils ; hydrogenation ; dynamic kinetic resolution
Elenco autori:
N. Ravasio, F. Zaccheria, A. Fusi, R. Psaro
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