Among the various interesting features of vanadium(V) there is its ability to activate hydrogen peroxide in diverse oxidation reactions. In this respect, we proposed a simple and effective procedure for oxybromination of unsaturated substrates in a biphasic system H2O/CH2Cl2. Then, with the aim of rendering such a procedure even more interesting from the sustainability point of view, we have substituted chlorinated solvents with ionic liquids, ILs. Interestingly enough, we observed a remarkable increase of both yield and selectivity with styrene and ethynylbenzene, obtaining synthetically interesting results. Here we report results with other substrates in order to enlarge the scope of the reaction. Very preliminary data of peroxovanadium catalyzed hydroxylation of arenes in ILs are also mentioned.

Conte, V., Floris, B., Silvagni, A. (2007). Vanadium-catalyzed oxidation in ionic liquids. In VANADIUM: THE VERASTILE METAL (pp.28-37). WASHINGTON : AMER CHEMICAL SOC.

Vanadium-catalyzed oxidation in ionic liquids

CONTE, VALERIA;
2007-01-01

Abstract

Among the various interesting features of vanadium(V) there is its ability to activate hydrogen peroxide in diverse oxidation reactions. In this respect, we proposed a simple and effective procedure for oxybromination of unsaturated substrates in a biphasic system H2O/CH2Cl2. Then, with the aim of rendering such a procedure even more interesting from the sustainability point of view, we have substituted chlorinated solvents with ionic liquids, ILs. Interestingly enough, we observed a remarkable increase of both yield and selectivity with styrene and ethynylbenzene, obtaining synthetically interesting results. Here we report results with other substrates in order to enlarge the scope of the reaction. Very preliminary data of peroxovanadium catalyzed hydroxylation of arenes in ILs are also mentioned.
5th International Symposium on Chemistry and Biological Chemistry of Vanadium
San Francisco, CA
SEP 10-14, 2006
Rilevanza internazionale
2007
2007
Settore CHIM/06 - CHIMICA ORGANICA
English
PEROXO COMPLEXES; SUPERCRITICAL FLUIDS; 2-PHASE SYSTEM; SALTS; HYDROXYLATION; CHEMISTRY; PEROXOCOMPLEXES; OXYBROMINATION; BROMINATION; EPOXIDATION
Intervento a convegno
Conte, V., Floris, B., Silvagni, A. (2007). Vanadium-catalyzed oxidation in ionic liquids. In VANADIUM: THE VERASTILE METAL (pp.28-37). WASHINGTON : AMER CHEMICAL SOC.
Conte, V; Floris, B; Silvagni, A
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/27757
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