Oxidation of 3,5-di-tert-butylcatechol in the presence of V-polyoxometalate
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Xue-Feng Hu
und
Lei Wu
Abstract
The oxidase and dioxygenase reactions of 3,5-di-tert-butylcatechol (DTBC, I) in the presence of V-polyoxometalate were studied. It was found that the addition of a Lewis base quenched the V-polyoxometalate-catalysed catechol dioxygenase reaction and catalysed the oxidase reaction selectively. The existence of V-polyoxometalate accelerates the autoxidation rate of I as demonstrated by the rate measurements. ESR and UV-VIS spectra showed that the Lewis base destroyed the dioxygenation reaction catalyst as formed and restrained its regeneration by suppressing the coordination of catechol radical to vanadium. The by-products of the dioxygenation and oxidation reactions are H2O and H2O2, respectively.
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© 2011 Institute of Chemistry, Slovak Academy of Sciences
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- A new bis(azine) tetradentate ligand and its transition metal complexes: Synthesis, characterisation, and extraction properties
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- From a Tb3+ chelated compound to a hybrid material: selective emission responses to anions
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