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Salts of N-nitro-O-(4-nitrophenyl)hydroxylamine were synthesized by a new method of oxidative nitration, involving the reaction of O-(4-nitrophenyl)hydroxylamine with KNO2 or NaNO2 in the presence of PhI(OAc)2 or PhIO as oxidants. When using Na15NO2, the samples containing the nitro group labeled with the 15N isotope were obtained. Acidification of the appropriate salt gave N-nitro-O-(4-nitrophenyl)hydroxylamine...
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