Synthesis and tautomerism of 2-(3,5-diaryl-1H-pyrazol-4-yl)-1-methyl-1H-benzimidazoles

被引：0
|
作者：
I. B. Dzvinchuk
M. O. Lozinskii
机构：
[1] National Academy of Sciences,Institute of Organic Chemistry
来源：
Chemistry of Heterocyclic Compounds | 2011年 / 46卷
关键词：
aroylhydrazines; benzimidazoles; pyrazoles; tautomerism;
D O I：
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学科分类号：
摘要：
The cyclocondensation of 1-methyl-2-phenacyl-1H-benzimidazole with aroylhydrazines yields 2-(3,5-diaryl-1H-pyrazol-4-yl)-1-methyl-1H-benzimidazoles. The 1H NMR spectra indicate that these products display tautomerism. The more stable tautomers have structures containing electron-donor aryl substituents at C-5 and electron-withdrawing aryl substituents at C-3 of the pyrazole ring.
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