PCET in the oxidation of ascorbate. Dramatic change of the kinetic isotope effect on the change in solvent polarity

Oxidation of ascorbate with substituted nitrosobenzenes is a proton-coupled electron transfer (PCET) reaction and the observed kinetic isotope effects (KIE) in the reaction, k H 2 O / k D 2 O , change dramatically with a change in solvent polarity. The first step in the oxidation of ascorbate with s...

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Bibliographic Details
Published in:Tetrahedron letters 2007-05, Vol.48 (21), p.3633-3637
Main Authors: Vuina, Daniela, Pilepić, Viktor, Ljubas, Daniel, Sanković, Krešimir, Sajenko, Ivana, Uršić, Stanko
Format: Article
Language:English
Subjects:
Ascorbate
Kinetic isotope effects
Proton-coupled electron transfer
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Summary:Oxidation of ascorbate with substituted nitrosobenzenes is a proton-coupled electron transfer (PCET) reaction and the observed kinetic isotope effects (KIE) in the reaction, k H 2 O / k D 2 O , change dramatically with a change in solvent polarity. The first step in the oxidation of ascorbate with substituted nitrosobenzenes is a proton-coupled electron transfer (PCET) reaction and the observed kinetic isotope effects in the reaction, k H 2 O / k D 2 O , change dramatically with a change in solvent polarity, in line with known theoretical predictions.
ISSN:0040-4039
1873-3581
DOI:10.1016/j.tetlet.2007.03.140