A 10 A new route to 6,6 ''-dicyano-2,2':6 ',2 ''-terpyridines and their complexes with Ni(II) [Text] / D. N. Kozhevnikov, V. N. Kozhevnikov, T. V. Nikitina, V. L. Rusinov, O. N. Chupakhin, I. L. Eremenko, G. G. Aleksandrov // Tetrahedron Letters. - 2002. - Vol. 43, № 28. - P4923-4925 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): SYNTHESIS -- TERPYRIDINES Аннотация: A new methodology for the synthesis of functionalised 2,2?:6?,2??-terpyridine systems is suggested: sequential synthesis of the heterocyclic assemblies based on the 1,2,4-triazine ring, direct introduction of the cyano group in the 1,2,4-triazine ring and the transformation of the latter to a pyridine ring via an aza-Diels–Alder reaction???? |