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Vanadium bromoperoxidases mimicking systems: Bromohydrins formation as evidence of the occurrence of a hypobromite-like vanadium complex

Authors
Journal
Tetrahedron Letters
0040-4039
Publisher
Elsevier
Publication Date
Volume
36
Issue
15
Identifiers
DOI: 10.1016/0040-4039(95)00331-6

Abstract

Abstract In the aqueous phase of a two-phase (H 2OCH 2Cl 2) system mimicking the hydrophilic and the hydrophobic portions of vanadium dependent bromoperoxidases, (V-BrPO), a mono peroxovanadium complex, formed in situ by addition of H 2O 2 to NH 4VO 3, oxidizes Br − to a species whose nature is still largely unknown. Such species displays a bromine-like reactivity toward organic substrates dissolved in CH 2Cl 2. The observation that styrene, 1-methyl- and 2-methyl styrenes afford, together with dibromo-compounds, appreciable amounts of bromohydrins, suggests that a hypobromite-like species is also formed. Evidence is presented that such a species is a vanadium complex.

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