Nitroazines. 4. Polarographic behavior of 5-nitropyrazolo[3,4-b]pyridines and the esr spectra of their electrochemically generated free radicals
Autor: | V. L. Rusinov, Ya. P. Stradyn, Oleg N. Chupakhin, L. Kh. Baumane, R. A. Gavar, A. Yu. Petrov |
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Rok vydání: | 1985 |
Předmět: | |
Zdroj: | Chemistry of Heterocyclic Compounds. 21:582-587 |
ISSN: | 1573-8353 0009-3122 |
Popis: | 1-Methyl- and 1-phenyl-substituted derivatives of 5-nitropyrazolo[3,4-b]pyridines are reduced at a dropping mercury electrode in a single one-electron wave with the formation of radical anions in interval of potentials from −0.94 to −1.06 V. Compounds unsubstituted at the N(1) nitrogen atom give an additional polarographic wave at E1/2 = −1.4 V due to the reduction of the deprotonated form (anion). The potentials and HFS constants of the ESR spectra of the corresponding electrochemically generated free radicals are given. |
Databáze: | OpenAIRE |
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