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Voltammetric study of the oxidation of quercetin and catechin in the presence of cyanide ion

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Abstract

The reaction of electrochemically generated o-benzoquinones from oxidation of quercetin and catechin as Michael acceptors with cyanide ion as nucleophile has been studied using cyclic voltammetry. The reaction mechanism is believed to be EC; including oxidation of catechol moiety of these antioxidants followed by Michael addition of cyanide ion. The observed homogeneous rate constants (k obs) for reactions were estimated by comparing the experimental voltammetric responses with the digitally simulated results based on the proposed mechanism. The effects of pH and nucleophile concentration on voltammetric behavior and the rate constants of chemical reactions were also described.

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Authors and Affiliations

  1. Department of Chemistry, Islamic Azad University, Shahr-e-Qods Branch, Tehran, Iran

    Lida Khalafi

  2. Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, Iran

    Mohammad Rafiee

  3. Department of Chemistry, Islamic Azad University, Saveh Branch, Saveh, Iran

    Farzaneh Yadaei

Authors
  1. Lida Khalafi
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  2. Mohammad Rafiee
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  3. Farzaneh Yadaei
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Correspondence to Lida Khalafi.

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Khalafi, L., Rafiee, M. & Yadaei, F. Voltammetric study of the oxidation of quercetin and catechin in the presence of cyanide ion. Res Chem Intermed 37, 1047–1055 (2011). https://doi.org/10.1007/s11164-011-0312-0

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  • DOI: https://doi.org/10.1007/s11164-011-0312-0

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