Abstract
Tetrazolo(1,5-a)pyridines may be prepared by the reaction of azide ion with 2-chloropyridines. These tetrazolo(1,5-a)pyridines are shown to be in equilibrium with the corresponding 2-azidopyridines. Furazano(4,5-b)pyridine 1-oxides may be prepared by thermolysis of the appropriate 4-nitrotetrazolo(1,2-a)pyridines, presumably via the corresponding 2-azido-3-nitropyridines. The furazano(4,5-b)pyridine 1-oxides are found to be in equilibrium with the 3-oxides. {sup 1}H and {sup 13}C NMR are used to examine this equilibrium.
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