反应详情

3,4-Dimethoxy-6-(2-bromoisonicotinoyl)benzoic acid (15.2 g) and hydrazine monohydrate (15 ml) are added to ethanol (30 ml), and the mixture is heated under reflux for one hour. The reaction mixture is cooled with ice, and the precipitates are collected by filtration to give 2-bromo-4-(6,7-dimethoxyphthalazin-1(2H)-on-4-yl)pyridine (14.1 g).

1. temperaturethe mixture is heated
2. temperatureunder reflux for one hour
3. temperatureThe reaction mixture is cooled with ice
4. filtrationthe precipitates are collected by filtration