反应详情

1-phenyl-3-(2-cyan-4-methoxy-5-n-butoxyphenyl)triazene (0.154 g, 0.47 mmol) and 70% ethanol (30.0 mL) were added into a flask. The solution was heated and refluxed to react for 1 h, then was evaporated under reduced pressure to dryness. Acetic acid glacial (20.0 mL) was added and the solution was refluxed for 1 h, cooled, filtered and washed with water till colorless. The crude product was purified by recrystallization with anhydrous ethanol to yield 0.121 g of light brown solid product with a recovery rate of 78.6%.

1. temperatureThe solution was heated
2. temperaturerefluxed
3. customto react for 1 h
4. customwas evaporated under reduced pressure to dryness
5. additionAcetic acid glacial (20.0 mL) was added
6. temperaturethe solution was refluxed for 1 h
7. temperaturecooled
8. filtrationfiltered
9. washwashed with water till colorless
10. customThe crude product was purified by recrystallization with anhydrous ethanol