Tetrazolopyridines may be prepared by the reaction of azide ion with 2-chloropyridines.These tetrazolopyridines are shown to be in equilibrium with the corresponding 2-azidopyridines.Furazanopyridine 1-oxides may be prepared by thermolysis of the appropriate 4-nitrotetrazolopyridines, presumably via the corresponding 2-azido-3-nitropyridines.The furazanopyridine 1-oxides are found to be in equilibrium with the 3-oxides. 1H and 13C NMR are used to examine this equilibrium.
Lowe-Ma, Charlotte K.,Nissan, Robin A.,Wilson, William S.
p. 3755 - 3761
(2007/10/02)
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