反应详情

A mixture of 3,4-dichloro-6-phenylpyridazine (0.53 g) and acetic acid (2.6 mL) was heated under reflux for 5 hr, and the solvent was evaporated under reduced pressure. The residue was neutralized with saturated aqueous sodium hydrogen carbonate solution. The obtained solid was collected by filtration and recrystallized from ethanol to give the title compound (0.20 g).

1. temperaturewas heated
2. temperatureunder reflux for 5 hr
3. customthe solvent was evaporated under reduced pressure
4. filtrationThe obtained solid was collected by filtration
5. customrecrystallized from ethanol