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Tautomerism in nitrotriazoles: structure investigation by combined 1H, 13C and 15N NMR spectroscopy

✍ Scribed by H. H. Licht; H. Ritter; H. R. Bircher; P. Bigler

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
352 KB
Volume
36
Category
Article
ISSN
0749-1581

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✦ Synopsis

The tautomerism and isomerism of triazoles make the structure analysis of such compounds a difficult problem, and in the case of several nitrotriazoles a detailed structure assignment had been lacking up to now. Supported by selected compounds, a deÐnite structure determination of ten nitrotriazoles was achieved by combined application of 15N NMR spectroscopy and increment calculations. This method also succeeded in cases where equilibria of tautomers were present. An evaluation of the shift data and coupling modes gave systematic references to structure and substituent inΓ‘uences.

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