反应详情

3-chloro-6-(4-cyanophenyl)-4-(ethoxycarbonyl)-pyridazine After the reaction solution has been stirred into water the aqueous phase is extracted with ethyl acetate. The organic phase is dried, evaporated down and the residue is chromatographed. Rf value: 0.37 (silica gel; cyclohexane/ethyl acetate=2:1)

1. extractionis extracted with ethyl acetate
2. customThe organic phase is dried
3. customevaporated down
4. customthe residue is chromatographed