Oxybromination reaction of styrene was performed in a two-phase system of water/ionic liquids (ILs). The aim of the work was to make the mild and efficient two-phase system previously developed for the vanadium(V)-catalyzed oxybromination of alkenes, inspired by the activity of haloperoxidase enzymes, even more interesting from a sustainable point of view. As in that case, a brominating intermediate was formed from the metal catalyst, H2O2, and bromide ion in the acid aqueous phase, but chlorinated solvents were replaced with ILs. [bmim(+)][PF6-], [bm(2)im(+)][PF6-], [bmim(+)][BF4-] [bmim(+)][CF3SO3-], and [bmim(+)][(CF3SO2)(2)N-] were tested. We report on interesting results in terms of reaction rates and selectivities.

Conte, V., Floris, B., Galloni, P., Silvagni, A. (2005). Sustainable vanadium(V)-catalyzed oxybromination of styrene: Two-phase system versus ionic liquids. In Pure and Applied Chemistry (pp.1575-1581). RES TRIANGLE PK : INT UNION PURE APPLIED CHEMISTRY [10.1351/pac200577091575].

Sustainable vanadium(V)-catalyzed oxybromination of styrene: Two-phase system versus ionic liquids

CONTE, VALERIA;FLORIS, BARBARA;GALLONI, PIERLUCA;
2005-01-01

Abstract

Oxybromination reaction of styrene was performed in a two-phase system of water/ionic liquids (ILs). The aim of the work was to make the mild and efficient two-phase system previously developed for the vanadium(V)-catalyzed oxybromination of alkenes, inspired by the activity of haloperoxidase enzymes, even more interesting from a sustainable point of view. As in that case, a brominating intermediate was formed from the metal catalyst, H2O2, and bromide ion in the acid aqueous phase, but chlorinated solvents were replaced with ILs. [bmim(+)][PF6-], [bm(2)im(+)][PF6-], [bmim(+)][BF4-] [bmim(+)][CF3SO3-], and [bmim(+)][(CF3SO2)(2)N-] were tested. We report on interesting results in terms of reaction rates and selectivities.
4th International Symposium on Chemistry and Biological Chemistry of Vanadium
Szeged, HUNGARY
SEP 03-05, 2004
Rilevanza internazionale
2005
2005
Settore CHIM/06 - CHIMICA ORGANICA
English
Hydrogen peroxide; Ionic liquids; Oxidation; Oxybromination; Styrene; Vanadium
Intervento a convegno
Conte, V., Floris, B., Galloni, P., Silvagni, A. (2005). Sustainable vanadium(V)-catalyzed oxybromination of styrene: Two-phase system versus ionic liquids. In Pure and Applied Chemistry (pp.1575-1581). RES TRIANGLE PK : INT UNION PURE APPLIED CHEMISTRY [10.1351/pac200577091575].
Conte, V; Floris, B; Galloni, P; Silvagni, A
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/27760
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