Free radicals in vicarious C-amination reactions of 1-methyl-4-nitropyrazole

The primary radical anions of substrate in the reactions of vicarious nucleophilic substitution of hydrogen in 1‐methyl‐4‐nitropyrazole with 1,1,1‐trimethylhydrazinium iodide and 4‐amino‐1,2,4‐triazole in t‐BuOK–DMSO were observed and identified by EPR monitoring. The probable mechanism of the subst...

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Bibliographic Details
Published in:Magnetic resonance in chemistry 2005-12, Vol.43 (12), p.1023-1027
Main Authors: Vakul'skaya, Tamara I., Titova, Irina A., Dolgushin, Gennadii V., Lopyrev, Valentin A.
Format: Article
Language:English
Subjects:
amination
ESR
nitropyrazoles
radical anions
vicarious nucleophilic substitution
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Summary:The primary radical anions of substrate in the reactions of vicarious nucleophilic substitution of hydrogen in 1‐methyl‐4‐nitropyrazole with 1,1,1‐trimethylhydrazinium iodide and 4‐amino‐1,2,4‐triazole in t‐BuOK–DMSO were observed and identified by EPR monitoring. The probable mechanism of the substrate radical anions formation is discussed. Copyright © 2005 John Wiley & Sons, Ltd.
ISSN:0749-1581
1097-458X
DOI:10.1002/mrc.1708