15N and 13C NMR study of protonated monoaminopyridines in CDCl3-DMSO

被引：7
|
作者：
Beltrame, P
Cadoni, E
Floris, C
Gelli, G
Lai, A
机构：
[1] Univ Cagliari, Dipartimento Sci Chim, I-09042 Monserrato, Italy
[2] Univ Milan, Dipartimento Chim Fis & Elettrochim, I-20133 Milan, Italy
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2002年 / 58卷 / 12期
关键词：
ammopyridines; protonation reactions; N-15 and C-13 NMR spectra; dehydrohalogenation reaction;
D O I：
10.1016/S1386-1425(02)00015-X
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
The 2-, 3- and 4-amino-pyridine and their protonated forms, obtained by reaction with pyridinium chloride, were investigated by N-15 NMR spectroscopy. Exhaustive evidence has been found that the protonation occurs mainly on the annular nitrogen. Protonation of 4-aminopyridine by dehydrohalogenation of 1,1,2,2-tetrachloroethane (TCE) was also studied by C-13 NMR spectroscopy, which indicated that the protonation occurs via the formation of adducts. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：2693 / 2697
页数：5
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