吡哆醇
化学
循环伏安法
电解
电化学
无机化学
乙腈
本体电解
伏安法
吸附
电极
核化学
色谱法
有机化学
生物化学
物理化学
电解质
作者
Jazreen H.Q. Lee,Yanni Yue,Rakesh Ganguly,Richard D. Webster
标识
DOI:10.1002/celc.201402340
摘要
Abstract Cyclic voltammetry (CV) and controlled potential electrolysis (CPE) experiments revealed that at a Pt electrode, pyridoxine undergoes a one‐electron chemically irreversible oxidation at approximately 0.50 V versus Fc/Fc + , likely generating a dimeric product. Fouling of the electrode surface could be detected with repeated scans during CV and during preparative scale CPE oxidation experiments. These adsorption effects were overcome by performing bulk oxidation of pyridoxine with NOSbF 6 as a chemical oxidant. At Pt electrodes, a cathodic wave associated with the reduction of pyridoxine was detected at approximately −1.60 V versus Fc/Fc + . The reduction process appeared to be chemically reversible on the shorter timeframe of CV, but not under the prolonged timescale of CPE. The reduction of pyridoxine involves a direct discharge of pyridoxine at the Pt surface, generating an oxide anion, which upon treatment with iodomethane yields N ‐methylated pyridoxine rather than its O ‐methylated analogue.
科研通智能强力驱动
Strongly Powered by AbleSci AI