反应详情

Methyl 5-(2-propylcarbamoyl)thiophene-2-carboxylate (1.22 g, 5.37 mmol) in ethanol (40 mL) was heated with hydrazine monohydrate (2.7 g) at 85° C. for 16 hours with reflux. After cooling, the solvent was evaporated, the resulting solid was recrystallized from chloroform to give 549.2 mg of the desired product (yield 45%).

1. temperaturewith reflux
2. temperatureAfter cooling
3. customthe solvent was evaporated
4. customthe resulting solid was recrystallized from chloroform