反应详情

1.0 kg of ethyl pivaloylacetate was dissolved in 2.5 liters of ethanol and 320 g of hydrazine hydrate was added dropwise thereto while cooling with water. After the addition, the whole was reacted for one night at room temperature and then 5.0 liters of water was added thereto and the system stirred. The crystals precipitated out were filtered out under reduced pressure, washed fully with water, then with a small amount of methanol and then dried with air. Yield: 812 g, 98.5%.

1. additionAfter the addition
2. customthe whole was reacted for one night at room temperature
3. customThe crystals precipitated out
4. filtrationwere filtered out under reduced pressure
5. washwashed fully with water
6. dry with materialwith a small amount of methanol and then dried with air