1H NMR evidence of C-H---O, C-H---N and C-H---Cl hydrogen bonds in new thiazole derivatives

被引：11
|
作者：
Sánchez-Viesca, F [1 ]
Berros, M [1 ]
机构：
[1] Natl Autonomous Univ Mexico, Grad Div, Fac Chem, Mexico City 04510, DF, Mexico
来源：
HETEROCYCLES | 2002年 / 57卷 / 10期
关键词：
antirheumatic drug; deacetylation; cyclization; thiophene; indium metal;
D O I：
10.3987/COM-02-9478
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
A comparative study of the chemical shift differences observed in the H-1 NMR spectra of a series of fifteen new polysubstituted 4-aryl- and 2,4-diaryl thiazoles permitted us to establish two groups of rotamers. Some present paramagnetic shifts due to intramolecular weak hydrogen bonding and this was confirmed by experiments "at infinite dilution", single crystal X-Ray studies, NOESY and HMBC experiments.
引用
收藏
页码：1869 / 1879
页数：11
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