Pulse radiolytic kinetic study of the decay of. alpha.-methyl-substituted benzoquinone radical anions: a possible mechanistic model for bioreductive alkylation

KE O'Shea, MA Fox

Index: O'Shea, Kevin E.; Fox, Marye Anne Journal of the American Chemical Society, 1991 , vol. 113, # 2 p. 611 - 615

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Citation Number: 27

Abstract

Abstract: Pulse radiolysis and transient absorption spectroscopy were used to kinetically characterize the decay of several a-methyl-substituted 1, 4-benzoquinone radical anions. Electron attachment rates, absorption spectra, extinction coefficients, and pK,'s for the reduced quinones are very similar regardless of substituent, but the decay kinetics are dependent on both substituent and pH. The semiquinone radical anions disproportionate ...