SCHEDULED MAINTENANCE
Aromatic azides with a para-substituent decompose thermally in a mixture of polyphosphoric and a carboxylic acid to give oxazoles, or in some case NO-diacyl o-aminophenols, in good yield. Various aspects of this nitrene mechanism are discussed.
R. Garner, E. B. Mullock and H. Suschitzky, J. Chem. Soc. C, 1966, 1980 DOI: 10.1039/J39660001980
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