Characterization of 2-aryl-1,3,4-oxadiazoles by 15N and 13C NMR spectroscopy

被引：12

作者：

Nowak-Wydra, B ^{[1
]}

Gierczyk, B ^{[1
]}

Schroeder, G ^{[1
]}

机构：

[1] Adam Mickiewicz Univ Poznan, Fac Chem, PL-60780 Poznan, Poland

来源：

MAGNETIC RESONANCE IN CHEMISTRY | 2003年 / 41卷 / 09期

关键词：

NMR; N-15; C-13; chemical shifts; Hammett correlations; 1,3,4-oxadiazole;

D O I：

10.1002/mrc.1231

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

N-15 NMR chemical shifts of 2-aryl-1,3,4-oxadiazoles were assigned on the basis of the H-1-N-15 HMBC experiment. Chemical shifts of the nitrogen and carbon atoms in the oxadiazole ring correlate with the Hammett sigma-constants of substituents in the aryl ring (r(2)greater than or equal to0.966 for N atoms). N-15 NMR data are a suitable and sensitive means for characterizing long-range electronic substituent effects. Additionally, C-13 NMR data for these compounds are presented. Copyright (C) 2003 John Wiley Sons, Ltd.

引用

页码：689 / 692

页数：4

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