Behavior of the semiquinone anion radical of hypocrellin B produced by electrolysis in dimethylsulfoxide

被引：2
|
作者：
Zhou, JH [1 ]
Wu, KW [1 ]
Xia, SQ [1 ]
Wang, XS [1 ]
Zhang, BW [1 ]
Cao, Y [1 ]
机构：
[1] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100101, Peoples R China
来源：
RESEARCH ON CHEMICAL INTERMEDIATES | 2004年 / 30卷 / 4-5期
关键词：
hypocrellin B; electrolysis; semiquinone anion radical;
D O I：
10.1163/1568567041257553
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The behavior of the semiquinone anion radical of hypocrellin B (HB), produced by electrolysis, has been studied by cyclic voltammetry, steady-state electron spin resonance, time-resolved electron spin resonance and in situ UV-Vis spectra. The results showed that the formation mechanisms of HB-. were different between electrolysis and photolysis, and the disproportionation of semiquinone anion radical of HB (HB-.) could not occur in dimethylsulfoxide; on the contrary, a syn-proportionation reaction in which HB2- reacts with HB to form HB-. was observed experimentally. At the same time, the kinetic parameters of HB-. were obtained from the time-decay experiments of HB-..
引用
收藏
页码：439 / 449
页数：11
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