期刊
RUSSIAN JOURNAL OF APPLIED CHEMISTRY
卷 88, 期 7, 页码 1178-1185出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S1070427215070125
关键词
-
Kinetics and mechanism of the reaction of vegetable phenols (PhOH) with 2,2'-diphenyl-1-picrylhydrazyl radical (DPPHaEuro cent) in a polar aprotic solvent, dimethyl sulfoxide, were studied. The reaction of natural phenols with DPPHaEuro cent in dimethyl sulfoxide occurs in two stages. In the first stage, a proton-coupled electron transfer (PCET) occurs from a PhOH molecule to DPPHaEuro cent to give primary transformation products, phenoxyl radicals (PhOaEuro cent) and diphenyl hydrazine (DPPH-H), and in the second, the hydrazyl radical is consumed in the reaction with PhOaEuro cent transformation products, enolized dimers, which is confirmed by NMR spectroscopy. A relationship was revealed between the antiradical activity of phenols in the reaction with DPPHaEuro cent (ln k) and the ionization potential of the phenolates being formed.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据