1H, 13C and 15N NMR and IR studies of halogen??substituted tetrazolo [1, 5??a] pyridines

P Cmoch, H Korczak, L Stefaniak…

Index: Cmoch; Korczak; Stefaniak; Webb Journal of Physical Organic Chemistry, 1999 , vol. 12, # 6 p. 470 - 478

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Citation Number: 23

Abstract

Abstract The tetrazole–azide tautomerization of some halogen-substituted tetrazolo [1, 5-a] pyridines was examined by IR spectroscopy at ambient temperature and by 1 H, 13 C and 15 N NMR spectroscopy at various temperatures. The tetrazolopyridines can exhibit equilibrium between the azide and the tetrazole forms. For some of them slow exchange occurs on the NMR time-scale, such that it is possible to estimate equilibrium constants. ...