Oxidation of N-Alkylhydroxylamines. IV. Anodic Oxidation of N-Alkylhydroxylamines
作者:HIROTERU SAYO、SHIGEKO OZAKI、MASAICHIRO MASUI
DOI:10.1248/cpb.21.1988
日期:——
The anodic oxidation of N-monoalkyl and N, N-dialkylhydroxylamines in acetonitrile was studied. These hydroxylamines showed two anodic waves at glassy-carbon electrode. Controlled potential electrolysis of the hydroxylamines at the first wave consumed two electrons per molecule oxidized. N-Alkylhydroxylamines and N, N-dimethylhydroxylamine gave the corresponding nitroso compounds and a nitrone, MeN(O)=CH2, respectively, while N, N-di-t-butylhydroxylamine gave t-nitrosobutane, t-butanol and isobutene. In the anodic oxidation the peak potentials were linearly related with the second order rate constants for oxidation of the hydroxylamines with DPPH, except in the case of N, N-di-t-butylhydroxylamine and di-t-butylnitroxide.
研究了 N-单烷基和 N,N-二烷基羟胺在乙腈中的阳极氧化。这些羟胺在玻璃碳电极上显示出两个阳极波。羟胺在第一波受控电位电解时,每个分子氧化消耗两个电子。N-烷基羟胺和 N,N-二甲基羟胺分别生成相应的亚硝基化合物和腈酮(MeN(O)=CH2),而 N,N-二叔丁基羟胺则生成叔亚硝基丁烷、叔丁醇和异丁烯。在阳极氧化过程中,除 N,N-二-t-丁基羟胺和二-t-丁基硝基氧化物外,羟胺与 DPPH 氧化的峰值电位与二阶速率常数呈线性关系。