Nitroazines. 4. Polarographic behavior of 5-nitropyrazolo[3,4-b]pyridines and the esr spectra of their electrochemically generated free radicals |
| |
Authors: | L Kh Baumane R A Gavar Ya P Stradyn' O N Chupakhin V L Rusinov A Yu Petrov |
| |
Institution: | (1) Institute of Organic Synthesis, Academy of Sciences of the Latvian SSR, Riga;(2) S. M. Kirov Ural Polytechnic Institute, Sverdlovsk |
| |
Abstract: | 1-Methyl- and 1-phenyl-substituted derivatives of 5-nitropyrazolo3,4-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.For Communication 3, see 1].Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 689–693, May, 1985. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|