The chemistry of vitamin B12. Part XV. Catalysis of alkyl halide reduction by vitamin B12a: studies using controlled potential reduction

H. Hill, J. M. Pratt, M. P. O'riordan, F. R. Williams, ROBERT J. P. Williams
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引用次数: 17

Abstract

Controlled potential coulometric analysis has been used to investigate the reduction of alkyl halides in the presence of vitamin B12a. At voltages greater than the half-wave potential of the alkyl halide the reduction is a two-electron process. Below this half-wave potential the reduction is a one-electron reaction. The importance of these observations lies in considerations of the reaction mechanisms of reductions catalysed by vitamin B12 in both model and biological systems.
维生素B12的化学成分。十五。维生素B12a催化烷基卤化物还原:控制电位还原的研究
用控制电位库仑法研究了维生素B12a存在时烷基卤化物的还原。当电压大于烷基卤化物的半波电位时,还原是一个双电子过程。在这个半波电位以下,还原是一个单电子反应。这些观察结果的重要性在于考虑了维生素B12在模型和生物系统中催化还原的反应机制。
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