Pyrrole studies part 41. Reactivity of 3,4-diformyl-2,5-dimethylpyrrole with diaminoalkanes. An unusual formation of 2-azafulvenes |
| |
Authors: | Sayed Ali Naghi Taheri R. Alan Jones Santokh Singh Badesha Majed M. Hania |
| |
Affiliation: | School of Chemical Sciences, University of East Anglia, Norwich, NR4 7TJ, U.K. |
| |
Abstract: | 3,4-Diformyl-2,5-dimethylpyrrole (1) reacts with ,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. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|