反应详情

A mixture of 4 parts of 3-(aminocarbonyl)-4-[3,3-bis(4-fluorophenyl)-2-propenyl]-N-(2,6-dimethylphenyl)-1-piperazineacetamide and 120 parts of methanol was hydrogenated at normal pressure and at room temperature with 2 parts of palladium-on-charcoal catalyst 10%. After the calculated amount of hydrogen was taken up, the catalyst was filtered off and the filtrate was evaporated. The residue was purified by column-chromatography over silica gel using a mixture of trichloromethane and methanol (90:10 by volume) as eluent. The pure fractions were collected and the eluent was evaporated. The residue was suspended in 2,2'-oxybispropane. The product was filtered off and dissolved in acetonitrile. The solution was filtered and the filtrate was evaporated. The residue was crystallized from 2,2'-oxybispropane. The product was filtered off and dried, yielding 2.21 parts of 3-(aminocarbonyl)-4-[3,3-bis(4-fluorophenyl)propyl]-N-(2,6-dimethylphenyl)-1-piperazineacetamide; mp. 143.2° C. (compound 170).

1. filtrationthe catalyst was filtered off
2. customthe filtrate was evaporated
3. customThe residue was purified by column-chromatography over silica gel using
4. additiona mixture of trichloromethane and methanol (90:10 by volume) as eluent
5. customThe pure fractions were collected
6. customthe eluent was evaporated
7. filtrationThe product was filtered off
8. dissolutiondissolved in acetonitrile
9. filtrationThe solution was filtered
10. customthe filtrate was evaporated
11. customThe residue was crystallized from 2,2'-oxybispropane
12. filtrationThe product was filtered off
13. customdried