反应详情

25 ml of 30% hydrogen bromide-acetic acid and 1 ml of dimethyl sulfoxide were added to 20 ml of a suspension containing 3.13 g of 2-(butyrylamino)methyl-5-[4,5-di-hydropyridazin-3(2H)-on-6-yl]indane suspended in acetic acid. The mixture was stirred at room temperature for 3 hours. Diisopropyl ether was added to the mixture, and crystals precipitated were collected by filtration, washed with water, dried and then recrystallized from methanol to obtain 2.80 g of 2-(butyrylamino)methyl-5-[pyridazin-3(2H)-on-6-yl]indane.

1. customprecipitated
2. filtrationwere collected by filtration
3. washwashed with water
4. customdried
5. customrecrystallized from methanol