3-甲基-4-氨基-5-亚硝基尿嘧啶电化学还原反应

The Electrochemical Reduction of 3-Methyl-4-Amino-5-Nitroso-Uracil

我们曾对4-氨基-5-亚硝基尿嘧啶系列物在高超电势下的还原机理做过一些研究。在低超电势下的还原机理尚未见报道。本工作用伏安法及恒电流阶跃法探讨了酸性介质中,3-甲基-4-氨基-5-亚硝基尿嘧啶(简写为3-MU)在低超电势范围内的还原历程。

This paper reports an experimental study pn the electrochemical behavior of 3-methyl-4-amino-5-nitrosouracil (3-MU) at bright platinum electrode in sulfuric acid solution. The process involving a reduction was established by means of cyclic voltammetry and constant current step methods. Electron spin resonance (ESR) spectroscopic method was used for the detection of intermediates. The results showed that radicals were generated during the reduction process. Based on data analysis a mechanism of the electrochemical reduction of 3-MU is proposed at the region of low overpotentials.