Thermolysis of furazan N-oxides results in ring cleavage to nitrile oxides which may be trapped in good yield as 1,3-dipolar cycloadducts; in the absence of dipolarophiles the intermediate nitrile oxides rearrange to isocyanates.
J. A. Chapman, J. Crosby, C. A. Cummings, R. A. C. Rennie and R. M. Paton, J. Chem. Soc., Chem. Commun., 1976, 240 DOI: 10.1039/C39760000240
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