反应详情

Add 1.18 g of anhydrous sodium acetate and 1.0 g of hydroxylamine hydrochloride to 3.9 g of 3-(5-nitro-2-furyl)-1-(2-pyridyl)pyrazole-4-carboxaldehyde in 12 ml of dimethylformamide, whereupon the temperature of the formed mixture rises slightly. Stir the resulting mixture at room temperature for 4 hours before pouring onto ice and water to obtain a 99% yield of 3-(5-nitro-2-furyl)-1-(2-pyridyl)pyrazole-4-carboxaldehydeoxime [m.p. 234.5° to 235° C].