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A Versatile Strategy for the Synthesis of Functionalized 2,2´-Bi- and 2,2´:6´,2´´-Terpyridines via their 1,2,4-Triazine Analogues

Kozhevnikov, V. N. ; Kozhevnikov, D. N. ; Nikitina, T. V. ; Rusinov, V. L. ; Chupakhin, O. N. ; Zabel, M.



Abstract

A general synthetic route for the synthesis of functionalized bi- and terpyridines is reported. Functionalized 1,2,4-triazene 4-oxides 7 and 8-obtained from the reaction of hydrazones 1 with pyridine aldehydes and followed by oxidation-are functionalized by introduction of a cyano group via nucleophilic aromatic substitution. The thus-obtained 5-cyano-1,2,4-triazines 9 and 10 undergo facile ...

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