Dimethylformamide → N-{[3-(5-Nitrofuran-2-yl)-1-phenyl-1H-pyrazol-4-yl]methylidene}hydroxylamine

Participants

Reaction Steps

Add 2.0 g of [3-(5-nitro-2-furyl)-1-phenylpyrazol-4-ylmethylene]dimethylammonium perchlorate, 0.42 g of anhydrous sodium acetate and 0.36 g of hydroxylamine hydrochloride to 11 ml of dimethylformamide. Stir the resulting admixture for 2 hours at room temperature before adding 30 ml of water dropwise thereto to precipitate the title compound for a 95% yield of 3-(5-nitro-2-furyl)-1-phenylpyrazole-4-carboxaldehydeoxime [m.p. 199° to 201° C (with decomposition)].

Provenance & Evidence