反应详情

温度

0 °C

A solution of (S,E)-2-(2,6-dichlorobenzamido)-5-[4-(isopropyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (526.2 g) in THF (15 ml) was cooled to 0° C. To the solution, 0.1N aqueous lithium hydroxide solution (15.4 ml) was added, and the resulting mixture was stirred at 0° C. for 40 minutes. Water (20 ml) was added to the reaction solution and the resulting mixture was washed with ether. Aqueous layer was acidified by adding 1N hydrochloric acid in small portions thereto, and extracted twice with ethyl acetate. Organic layers were washed with saturated brine and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated to dryness to obtain (S,E)-2-(2,6-dichlorobenzamido)-5-[4-(isopropyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid (420.7 mg).

1. washthe resulting mixture was washed with ether
2. additionby adding 1N hydrochloric acid in small portions
3. extractionextracted twice with ethyl acetate
4. washOrganic layers were washed with saturated brine
5. dry with materialdried over anhydrous sodium sulfate
6. customAfter removing anhydrous sodium sulfate
7. filtrationby filtration
8. concentrationthe filtrate was concentrated to dryness