Radical anions and dianions of 3,3"-bi(2-R-5,5-dimethyl-4-oxopyrrolinylidene) 1,1"-dioxides

被引：0
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作者：
L. A. Shundrin
V. A. Reznikov
I. G. Irtegova
V. F. Starichenko
机构：
[1] Russian Academy of Sciences,N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch
来源：
Russian Chemical Bulletin | 2003年 / 52卷
关键词：
3,3"-bi(2-R-5,5-dimethyl-4-oxopirrolinylidene) 1,1"-dioxides; cyclic nitrons; electrochemical reduction; radical anions; dianions;
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摘要：
3,3"-Bi(2-R-5,5-dimethyl-4-oxopyrrolinylidene) 1,1"-dioxides (R = CF3, Me, Ph, and But), which represent cyclic nitrons linked by the conjugated C=C bond, were shown to be strong electron-acceptors. The mechanism of their electrochemical reduction is the EE-type process including the consecutive formation of radical anions and dianions, which are stable under standard conditions. The radical anions of dinitrons, which are stable at 298 K and whose nitron group is not a part of the aromatic π-system and is not conjugated with it, were obtained for the first time and characterized by ESR spectroscopy in combination with quantum-chemical calculations.
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页码：939 / 943
页数：4
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