A sustainable V(V) and Mo(VI) catalysed two-phase procedure for bromination of toluene under quite mild conditions is proposed; H2O2 is the primary oxidant and KBr is the bromine source; metal precursors are commercially available salts. The reaction is efficient without any additional solvent. By using PhCH3 as a solvent/substrate good yields, together with interesting selectivity toward the formation of PhCH2Br, are obtained with both metal ions. Recycling of the catalytic phase is also possible. Useful information on the V-peroxido chemistry was obtained.
Galloni, P., Mancini, M., Floris, B., Conte, V. (2013). A sustainable two-phase procedure for V-catalyzed toluene oxidative bromination with H2O2–KBr. DALTON TRANSACTIONS, 42(33), 11963-11970 [10.1039/c3dt50907a].
A sustainable two-phase procedure for V-catalyzed toluene oxidative bromination with H2O2–KBr
GALLONI, PIERLUCA;FLORIS, BARBARA;CONTE, VALERIA
2013-01-01
Abstract
A sustainable V(V) and Mo(VI) catalysed two-phase procedure for bromination of toluene under quite mild conditions is proposed; H2O2 is the primary oxidant and KBr is the bromine source; metal precursors are commercially available salts. The reaction is efficient without any additional solvent. By using PhCH3 as a solvent/substrate good yields, together with interesting selectivity toward the formation of PhCH2Br, are obtained with both metal ions. Recycling of the catalytic phase is also possible. Useful information on the V-peroxido chemistry was obtained.| File | Dimensione | Formato | |
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