1-Methyl-2(3,4)-(1-vinylpyrrol-2-yl)pyridinium iodides: some structural features revealed by H-1 and C-13 NMR spectroscopy

Authors
Afonin, AV Kuznetsova, SY Ushakov, IA Petrova, OV Voronov, VK Mikhaleva, AI
Citation
Av. Afonin et al., 1-Methyl-2(3,4)-(1-vinylpyrrol-2-yl)pyridinium iodides: some structural features revealed by H-1 and C-13 NMR spectroscopy, RUSS CHEM B, 50(3), 2001, pp. 551-553
Citations number
11
Categorie Soggetti
Chemistry
Journal title
RUSSIAN CHEMICAL BULLETIN
ISSN journal
10665285 → ACNP
Volume
50
Issue
3
Year of publication
2001
Pages
551 - 553
Database
ISI
SICI code
1066-5285(200103)50:3<551:1ISSF>2.0.ZU;2-Y
Abstract
The reactions of 2-, 3-, and 4-(1-vinylpyrrol-2-yl)pyridines with methyl io dide afford the corresponding quaternary salts. Analysis of their H-1 and C -13 NMR spectra showed that the quaternization of the nitrogen atom conside rably enhances the pi -acceptor effect of the pyridine ring oil the pyrrole ring and oil the vinyl group. 1-Methyl-2-(1-vinylpyrrol-2-yl)pyridinium io dide contains no weak intramolecular C-H...N hydrogen bond present in the s tarting compound.