Pyrrole studies part 41. Reactivity of 3, 4-diformyl-2, 5-dimethylpyrrole with diaminoalkanes. An unusual formation of 2-azafulvenes

Autor:	Taheri, Sayed Ali Naghi, Jones, R Alan, Badesha, Santokh Singh, Hania, Majed
Rok vydání:	1989
Popis:	3,4-Diformyl-2,5-dimethylpyrrole (1) reacts with α,ω-diamino-alkanes, NH2(CH2)nNH2t' to form either the potentially tautomeric 2:2 macrocyclic adduct (7a) ⇌ (8), when n = 2, or the potentially tautomeric 1:1 bicyclic adduct (18) ⇌ (19), when n = 4, 5, 6, and 12. 1H and 13C N.m.r. spectral data indicate that the 2-azafulvene structures predominate for both types of cycloadducts. Only polymeric material was obtained when n = 3.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=od______4294::a2838367011adba6d18159c37fd52e3f https://www.sciencedirect.com/science/article/pii/S0040402001857884 Zobrazit plný text záznamu