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Issue 7, 2014
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Disproportionation of a 2,2-diphenyl-1-picrylhydrazyl radical as a model of reactive oxygen species catalysed by Lewis and/or Brønsted acids

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Abstract

Electron-transfer disproportionation of a 2,2-diphenyl-1-picrylhydrazyl radical (DPPH˙) occurred in the presence of Sc3+ acting as a strong Lewis acid in deaerated acetonitrile. In contrast, in the case of weaker Lewis acids than Sc3+, such as Mg2+ and Li+, external protons from acetic acid were required for the disproportionation of DPPH˙ to occur.

Graphical abstract: Disproportionation of a 2,2-diphenyl-1-picrylhydrazyl radical as a model of reactive oxygen species catalysed by Lewis and/or Brønsted acids

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Publication details

The article was received on 11 Oct 2013, accepted on 06 Nov 2013 and first published on 07 Nov 2013


Article type: Communication
DOI: 10.1039/C3CC47819J
Citation: Chem. Commun., 2014,50, 814-816
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    Disproportionation of a 2,2-diphenyl-1-picrylhydrazyl radical as a model of reactive oxygen species catalysed by Lewis and/or Brønsted acids

    I. Nakanishi, T. Kawashima, K. Ohkubo, T. Waki, Y. Uto, T. Kamada, T. Ozawa, K. Matsumoto and S. Fukuzumi, Chem. Commun., 2014, 50, 814
    DOI: 10.1039/C3CC47819J

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