反应详情

To a solution of N-{5-[(2-amino[1,3]thiazolo[5,4-b]pyridin-5-yl)oxy]-2-methylphenyl}-3-(1-cyano-1-methylethyl)benzamide (300 mg, 0.676 mmol) in pyridine (6.0 mL) was added cyclopropanecarbonyl chloride (80 μL, 0.879 mmol), and the mixture was stirred at room temperature for 2 hr. The reaction mixture was concentrated under reduced pressure, and the obtained residue was diluted with ethyl acetate (200 mL), washed with 5% aqueous sodium hydrogen carbonate solution (200 mL), water (200 mL) and saturated brine (200 mL), and dried over anhydrous sodium sulfate. The insoluble material was filtered off, and the filtrate was concentrated under reduced pressure. The obtained residue was purified by basic silica gel column chromatography (hexane/ethyl acetate=50/50→0/100), and the obtained solution was concentrated under reduced pressure. The residue was recrystallized from ethyl acetate to give the title compound (234 mg, 68%) as a colorless powder.

1. concentrationThe reaction mixture was concentrated under reduced pressure
2. additionthe obtained residue was diluted with ethyl acetate (200 mL)
3. washwashed with 5% aqueous sodium hydrogen carbonate solution (200 mL), water (200 mL) and saturated brine (200 mL)
4. dry with materialdried over anhydrous sodium sulfate
5. filtrationThe insoluble material was filtered off
6. concentrationthe filtrate was concentrated under reduced pressure
7. customThe obtained residue was purified by basic silica gel column chromatography (hexane/ethyl acetate=50/50→0/100)
8. concentrationthe obtained solution was concentrated under reduced pressure
9. customThe residue was recrystallized from ethyl acetate