☆ 4.5 Article

Carbon-hydrogen bond activation of arenes and alkylarenes by electron transfer followed by oxygen transfer catalyzed by vanadium substituted polyoxometalates - A comparative study of the reactivity of different polyoxometalate compounds

JOURNAL OF ORGANOMETALLIC CHEMISTRY (2015)

期刊

JOURNAL OF ORGANOMETALLIC CHEMISTRY

卷 793, 期 -, 页码 134-138

出版社

ELSEVIER SCIENCE SA

DOI: 10.1016/j.jorganchem.2015.02.019

关键词

Homogeneous catalysis; Oxidation; Polyoxometalates; Vanadium; Electron transfer; C-H bond activation

类别

Chemistry, Inorganic & Nuclear Chemistry, Organic

资金

Israel Science Foundation [1073/10, 763/14]
Bernice and Peter Cohn Catalysis Research Fund
Helen and Martin Kimmel Center for Molecular Design

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摘要

The reactivity of various vanadium-substituted polyoxometalates with different structures and oxidation potentials was compared for the electron transfer-oxygen transfer oxidation of anthracene and dihydroanthracene as model substrates. Electron transfer initiates the C-H bond activation. Analysis of reactivity via an outer sphere electron transfer model demonstrates that in addition to the oxidation potential, the polyoxometalate structure and charge are important parameters in the electron transfer reaction. A further comparative study for electron transfer and oxygen transfer reactivity showed that the eventual formation of the oxygenated product, although initiated by electron transfer was dependent on other factors. (C) 2015 Elsevier B.V. All rights reserved.

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