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.
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.
Titolo: | One pot selective hydrogenation and dynamic kinetic resolution over Cu/Al2O3: A way to (-)-menthol starting from low value mint oils | |
Autori: | ||
Parole Chiave: | copper catalysts ; renewables ; essential oils ; hydrogenation ; dynamic kinetic resolution | |
Settore Scientifico Disciplinare: | Settore CHIM/03 - Chimica Generale e Inorganica | |
Data di pubblicazione: | 2006 | |
Rivista: | ||
URL: | http://scienceserver.cilea.it/cgi-bin/sciserv.pl?collection=journals&journal=0926860x&issue=v315inone_c&article=114_opshadsflvmo&form=pdf&file=fi | |
Tipologia: | Article (author) | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.apcata.2006.09.010 | |
Appare nelle tipologie: | 01 - Articolo su periodico |