The title compounds, prepared from 6-arylsulphonamidobenzoxazol-2(3H)-ones by oxidation, undergo addition of hydrogen chloride, hydrazoic acid, benzenesulphinic acid, and acetylacetone to give substituted benzoxazol-2(3H)-ones. In contrast, piperidine and methanol cleave the heterocyclic ring.
I. Baxter, D. W. Cameron and M. R. Thoseby, J. Chem. Soc. C, 1970, 850 DOI: 10.1039/J39700000850
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