Water → (E)-2-(2,6-dichlorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid

To a solution of (E)-2-(2,6-dichlorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (2.38 g) in THF (20 ml), 0.5N aqueous sodium hydroxide solution (14.7 ml) was added, and the resulting mixture was stirred at room temperature for 1 hour. Water (120 ml) was added to the reaction solution and the resulting mixture was washed with ether. Aqueous layer was acidified by adding 1N hydrochloric acid 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 (E)-2-(2,6-dichlorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid (2.06 g).

1. washthe resulting mixture was washed with ether
2. additionby adding 1N hydrochloric acid
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

ORD-Eintrag

ord-9d70f3dad2304a2fac348bf96f4fd292

Quelldatensatz

uspto-grants-2011_02

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07879837B2