反应详情

Compound 5 (6.58 g, 17.8 mmol), and ethanol (200 mL) were combined under argon. Hydrazine (835 μL, 26.6 mmol) was added and the resulting solution was heated at reflux for 4 h. The solution was cooled and rotary evaporated. Ethyl acetate was added followed by the addition of ether. The solution was again rotary evaporated to afford a foam (6) which was used as is for the synthesis of 7.

1. temperaturethe resulting solution was heated
2. temperatureat reflux for 4 h
3. temperatureThe solution was cooled
4. customThe solution was again rotary evaporated