Reactions of potentially tautomeric methyl and methylene derivatives of pyridine and diazines with N-electrophiles (review)

Data on the nitration, nitrosation, azo-coupling, and electrophilic amination of potentially tautomeric methyl and methylene derivatives of a series of pyridines, pyridazines, pyrimidines, and pyrazines in media of varying acidity and basicity are reviewed systematically. Novosibirsk Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk 630090. Russia. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 147–162, February, 1998.