Abstract
The mechanism for the gold-catalyzed aerobic oxidation of alcohols was studied using a series of para-substituted benzyl alcohols (Hammett methodology). The competition experiments clearly show that the rate-determining step of the reaction involves the generation of a partial positive charge in the benzylic position (i.e. hydride abstraction). This was further substantiated by the determination of a significant kinetic isotope effect (kH/kD = 1.41), when employing an alcohol substrate deuterated in this position.
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Center for Sustainable and Green Chemistry is sponsored by the Danish National Research Foundation.
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Fristrup, P., Johansen, L.B. & Christensen, C.H. Mechanistic Investigation of the Gold-catalyzed Aerobic Oxidation of Alcohols. Catal Lett 120, 184–190 (2008). https://doi.org/10.1007/s10562-007-9301-8
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DOI: https://doi.org/10.1007/s10562-007-9301-8