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 substrate radical anions formation is discussed.
Vakul'skaya
Tamara I
TI
A. E. Favorsky Irkutsk Institute of Chemistry of the Russian Academy of Sciences, Siberian Branch, Favorsky Street 1, Irkutsk, 664033, Russia. vti@irioch.irk.ru
Titova
Irina A
IA
Dolgushin
Gennadii V
GV
Lopyrev
Valentin A
VA