Issue 1, 2002

15N NMR spectra, tautomerism and diastereomerism of 4,5-dihydro-1H-1,2,3-triazoles

Abstract

Despite the great number of 4,5-dihydro-1H-1,2,3-triazoles synthesized, 15N NMR data of these heterocycles are extremely rare. The aim of this paper is to present such data and examples of their application. The compounds investigated have been synthesized according to the given references or procedures. Their 15N NMR spectra were measured at natural abundance. For some compounds, the chemical shift assignments were confirmed with the help of 15N labelled material. The influences on 15N chemical shifts of substitution pattern, solvent and concentration were investigated. Additionally, some lanthanide induced shift (LIS) investigations were performed. 13C labelled compounds were employed as tools to provide the assignment of tautomeric structures.

Graphical abstract: 15N NMR spectra, tautomerism and diastereomerism of 4,5-dihydro-1H-1,2,3-triazoles

Article information

Article type
Paper
Submitted
13 Aug 2001
Accepted
26 Oct 2001
First published
03 Dec 2001

J. Chem. Soc., Perkin Trans. 2, 2002, 126-134

15N NMR spectra, tautomerism and diastereomerism of 4,5-dihydro-1H-1,2,3-triazoles

K. Banert, J. Lehmann, H. Quast, G. Meichsner, D. Regnat and B. Seiferling, J. Chem. Soc., Perkin Trans. 2, 2002, 126 DOI: 10.1039/B107326E

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