An electron spin resonance and voltammetric investigation of some 2-mono- and 2,4-disubstituted pyridinyl radicals was written by Greci, Lucedio;Alberti, Angelo;Carelli, Italo;Trazza, Antonio;Casini, Antonio. And the article was included in Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999) in 1984.Product Details of 1620-76-4 This article mentions the following:
Reduction of the pyridinium salts I (R = cyano, R1 = H, Me, CMe3, cyano; R = CO2Et, COMe, R1 = H) with Me3COK in deoxygenated DMSO was studied by ESR spectroscopy, and the results compared with electrochem. reduction of I. The electrochem. and ESR data were combined to obtain a scale of stability for the radicals II (same R, R1, R2 = Me). N-Methyl-2-cyanopyridinyl, too unstable to be observed, eventually evolved to the 2,4-dicyano-substituted radical. ESR studies on the related germylpyridinyls II (same R, R1, R2 = GePh3) were also carried out. In the experiment, the researchers used many compounds, for example, 4-Methylpicolinonitrile (cas: 1620-76-4Product Details of 1620-76-4).
4-Methylpicolinonitrile (cas: 1620-76-4) belongs to pyridine derivatives. Pyridine’s the lone pair does not contribute to the aromatic system but importantly influences the chemical properties of pyridine, as it easily supports bond formation via an electrophilic attack. Many analogues of pyridine are known where N is replaced by other heteroatoms . Substitution of one C–H in pyridine with a second N gives rise to the diazine heterocycles (C4H4N2), with the names pyridazine, pyrimidine, and pyrazine.Product Details of 1620-76-4