反应详情

4.4 Grams of 5-(2,3-epoxypropoxy)-3,4-dihydrocarbostyril and 3.4 g of 4-phenylpiperazine are dispersed in 60 ml of methanol and reacted at 50°-60° C. for 3 hours. After the reaction is completed, the reaction mixture is concentrated under a reduced pressure. To the residue thus obtained are added 5 ml of concentrated hydrochloric acid and 30 ml of ethanol to dissolve the residue uniformly and further 200 ml of acetone are added. The crystals precipitated are collected by filtration and dried. Recrystallization from water obtains 6.5 g of 5-[2-hydroxy-3-(4-phenylpiperazinyl)propoxy]-3,4-dihydrocarbostyril monohydrochloride in the form of colorless needle-like crystals with a melting point of 239°-241° C.

1. customreacted at 50°-60° C. for 3 hours
2. concentrationthe reaction mixture is concentrated under a reduced pressure
3. customTo the residue thus obtained
4. dissolutionto dissolve the residue uniformly
5. customThe crystals precipitated
6. filtrationare collected by filtration
7. customdried
8. customRecrystallization from water