反应详情

To a solution of 2-chloro-3-(1-cyanocyclopropyl)-N-[5-({2-[(cyclopropylcarbonyl)amino][1,3]thiazolo[5,4-b]pyridin-5-yl}oxy)-2-fluorophenyl]benzamide (3.5 g, 6.39 mmol) produced in Example C127(x) in pyridine (35 mL) were added N,N-dimethylpyridine-4-amine (3.87 g, 31.7 mmol) and cyclopropanecarbonyl chloride (3.0 mL, 33.1 mmol) at 10° C., and the mixture was stirred at room temperature for 1.5 hr. The reaction mixture was poured into ice water (70 mL), and the mixture was extracted with ethyl acetate (80 mL×3). The organic layers were combined, washed successively with water (50 mL) and saturated brine (30 mL), dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (hexane/ethyl acetate=95/5→20/80). The obtained residue was recrystallized from ethyl acetate to give the title compound (2.47 g, 63%) as white crystals.

1. extractionthe mixture was extracted with ethyl acetate (80 mL×3)
2. washwashed successively with water (50 mL) and saturated brine (30 mL)
3. dry with materialdried over anhydrous magnesium sulfate
4. concentrationconcentrated under reduced pressure
5. customThe residue was purified by silica gel column chromatography (hexane/ethyl acetate=95/5→20/80)
6. customThe obtained residue was recrystallized from ethyl acetate