Free-radical intermediates in the electrochemical reduction of ?,? derivatives of ?-(5-nitro-2-furyl)-?-cyanoethylene

1991 ◽  
Vol 27 (12) ◽  
pp. 1312-1315
Author(s):  
R. A. Gavar ◽  
Ya. P. Stradyn' ◽  
L. Kh. Baumane ◽  
K. Enish
Keyword(s):  
Free Radical ◽  
Electrochemical Reduction ◽  
Radical Intermediates ◽  
Derivatives Of

Electrochemical reduction of para-substituted 2-acyl-5-phenylfuranes in dimethylformamide

1981 ◽  
Vol 46 (2) ◽  
pp. 498-502 ◽  
Author(s):  
Jozef Černák ◽  
František Tomanovič ◽  
Andrej Staško ◽  
Anna Fedosyevna Oleinikova ◽  
Jaroslav Kováč
Keyword(s):  
Electrochemical Reduction ◽  
Unpaired Electron ◽  
Anion Radical ◽  
Electron Wave ◽  
Epr Method ◽  
Electron Center ◽  
Nitrogen Nucleus ◽  
Nitro Derivatives ◽  
Stable Anion ◽  
Derivatives Of

para Substituted chloro, bromo, and nitro derivatives of 2-acyl-5-phenylfurane are reduced polarographically in a one-electron wave to the corresponding anion radicals, which were studied by the EPR method. The reduction of nitro derivatives, studied by the Kalousek switch, is reversible and leads to a stable anion radical with an unpaired electron center on the nitrogen nucleus; the reduction of the halogen derivatives is only partly reversible and leads to unstable ketyl radicals. The bromo derivatives give polarographic maxima typical for concurrent reactions.

A novel probe for free-radical intermediates

1987 ◽  
pp. 1238 ◽  
Author(s):  
Amanda Johns ◽  
John A. Murphy ◽  
Christopher W. Patterson ◽  
Nicholas F. Wooster
Keyword(s):  
Free Radical ◽  
Radical Intermediates
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