反应详情

Phenylhydrazine (10.8 g, 0.1 mol), and acrylamide (7.8 g, 0.11 mol), pulverized potassium hydroxide (12.5 g, 0.22) and a catalytic amount of tetrabutylammonium bromide is refluxed for 30 minutes. The precipitate is filtered and washed with toluene. The crystalline sold is dissolved in water. Acidification with acetic acid, filtration and drying gives 1-phenyl-3-pyrazolidone.

1. filtrationThe precipitate is filtered
2. washwashed with toluene
3. dissolutionThe crystalline sold is dissolved in water
4. filtrationAcidification with acetic acid, filtration
5. customdrying