反应详情

In a 1.0-liter egg plant-type flask, an ethanol solution (300 mL) of 2-hydrazinopyridine (16.3 g, 0.15 mol) and ethyl 3-oxobutanoate (20.5 g, 0.16 mol) was stirred overnight with heating under reflux. Ethanol was removed from the reaction solution under reduced pressure to obtain the title compound as a brown oily crude product.

1. temperaturewith heating
2. temperatureunder reflux
3. customEthanol was removed from the reaction solution under reduced pressure