反应详情

A solution of 8.5 g (26.6 mmol) 2-(3,5-bis-trifluoromethyl-phenyl)-2-methyl-propionyl chloride in 12 ml dichloromethane was added dropwise at room temperature to a solution of 8.0 g (24.2 mmol) methyl-[4-(4-fluoro-2-methyl-phenyl)-6-thiomorpholin-4-yl-pyridin-3-yl]-amine and 4.7 ml (33.9 mmol) triethylamine in 65 ml dichloromethane. The reaction mixture was stirred for 1 hour and poured onto 50 ml 1 N aqueous sodium hydroxide. After extraction the phases were separated, the aqueous phase was extracted with dichloromethane and the organic phases were washed with water. The combined organic extracts were concentrated under reduced pressure and the solvent was exchanged for 150 ml ethanol. The solution was seeded at 40° C. with some crystals, 30 ml water were slowly added and the system was stirred for 1 hour at room temperature and for 1 hour at 0° C. The precipitate was filtered off, washed with cold ethanol (0° C.) and dried under high vacuum to yield 13.0 g (76% over 3 steps) 2-(3,5-bis-trifluoromethyl-phenyl)-N-methyl-N-[4-(4-fluoro-2-methyl-phenyl)-6-thiomorpholin-4-yl-pyridin-3-yl]-isobutyramide as an off-white powder of

1. extractionAfter extraction the phases
2. customwere separated
3. extractionthe aqueous phase was extracted with dichloromethane
4. washthe organic phases were washed with water
5. concentrationThe combined organic extracts were concentrated under reduced pressure
6. customwas seeded at 40° C. with some crystals, 30 ml water
7. additionwere slowly added
8. stirringthe system was stirred for 1 hour at room temperature and for 1 hour at 0° C
9. filtrationThe precipitate was filtered off
10. washwashed with cold ethanol (0° C.)
11. customdried under high vacuum