C-13-NMR AND N-15-NMR SPECTRA OF PHENYLAZOACETOACETAMIDES AND SIMILAR COMPOUNDS

被引：14
|
作者：
JIRMAN, J
LYCKA, A
机构：
[1] Research Inst of Organic Syntheses, Pardubice-Rybitvi, Czech, Research Inst of Organic Syntheses, Pardubice-Rybitvi, Czech
来源：
DYES AND PIGMENTS | 1987年 / 8卷 / 01期
关键词：
NUCLEAR MAGNETIC RESONANCE;
D O I：
10.1016/0143-7208(87)85005-2
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The **1**3C- and **1**5N-NMR spectra of phenylazoacetoacetamides (1) and similar compounds and their **1**5N-isotopomers have been measured and the carbon and nitrogen signals have been assigned. The compounds exist in their hydrazone forms. Based on the stereospecific behavior of the coupling constants **2J(**1**5N**1**3C) a strong predominance of (Z)-isomer has been found for the compounds 1 in C**2HCl//3 or in left bracket **2**,H//6 right bracket DMSO solutions. In some cases (E)-isomers ( less than equivalent to 5%) have been observed.
引用
收藏
页码：55 / 62
页数：8
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