Pyridine → 3,5-Dimethyl-4-(4-nitrophenyl)-isoxazole

참여 물질

반응 단계

A mixture of 3-(4-nitrophenyl)-pentane-2,4-dione (50 mg, 0.22 mmol), hydroxylamine hydrochloride (15 mg, 0.22 mmol) and pyridine (17 mg, 0.22 mmol) in ethanol (10 ml) was heated to reflux overnight. Evaporation of the solvent gave a residue which was partitioned between water and ethyl acetate. The organic layer was separated, washed with water, then brine and dried. Evaporation to dryness yielded 3,5-dimethyl-4-(4-nitrophenyl)-isoxazole (44 mg, 90%) as solid.

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