2-Nitrophenyl derivatives are converted into 2,1-benzisoxazoles via an intermediate which arises from an internal oxidation–reduction reaction; subsequent loss of water or ROH gives the benzisoxazole. The initial step is addition of an oxygen atom from the o-nitro-group to the α-carbon.
D. R. Eckroth and T. G. Cochran, J. Chem. Soc. C, 1970, 2660 DOI: 10.1039/J39700002660
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