反应详情

1.1 g (2.9 mmol) 6-[2-(2,6-dichloro-pyridin-3-yl)-benzoxazol-6-yl]-5-methyl-4,5-dihydro-2H-pyridazin-3-one, 1 ml morpholine and 50 ml of ethanol are refluxed together for 3 h, then the solv. is eliminated by rotary evaporation i.V., the residue is stirred with water and filtered off. The crude product is recrystallised from aqueous isopropanol.

1. filtrationfiltered off
2. customThe crude product is recrystallised from aqueous isopropanol