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Use of13C1H coupling constants for the investigation of azide—tetrazole tautomerism in aromatic nitrogen heterocycles. Detection of ditetrazolo [1,5‐a: 1′,5′‐c:] pyrimidine

 

作者: Aleksei Yu. Denisov,   Viktor P. Krivopalov,   Viktor I. Mamatyuk,   Vladimir P. Mamaev,  

 

期刊: Magnetic Resonance in Chemistry  （WILEY Available online 1988）
卷期: Volume 26, issue 1  

页码: 42-46

 

ISSN:0749-1581

 

年代: 1988

 

DOI:10.1002/mrc.1260260111

 

出版商: John Wiley&Sons, Ltd.

 

关键词: 13C NMR;1H NMR;13C1H coupling constants;Azide‐tetrazole tautomerism;Azidobenzene;Tetrazolo[1,5‐a]pyridine;Azidopyrimidines;Ditetrazolo[1,5‐a: 1′,5′‐c]pyrimidine

 

数据来源: WILEY

 

摘要:

AbstractThe proton‐coupled13C NMR and1H NMR spectra of azidobenzene, tetrazolo[1,5‐a]pyridine, 2‐azidopyrimidine and tetrazolo[1,5‐a]pyrimidine in different solvents have been analysed, and criteria for using the NMR spectral parameters (especially the13C‐1H coupling constants) for tautomeric structure determination have been elaborated. The efficiency of these criteria has been demonstrated in studies of azide‐‐tetrazole equilibria in 2,4‐ and 4,6‐diazidopyrimidines. The ditetrazolo tautomeric form of 2,4‐diazidopyrimidine has been foun

 

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