반응 #11780

반응 방정식

phosphate

3-(5-chloro-2-{2-[4-(4-fluoro-benzyl)-(2R,5S)-2,5-dimethyl-piperazin-1-yl]-2-oxo-ethoxy}-pyridin-3-yl)-propionic acid ethyl ester

lithium hydroxide monohydrate

hydrochloric acid

→

title compound

수율 25.4%

3-(5-Chloro-2-{2-[4-(4-fluoro-benzyl)-(2R,5S)-2,5-dimethyl-piperazin-1-yl]-2-oxo-ethoxy}-pyridin-3-yl)-propionic acid

수율 25.4%

용매

tetrahydrofuran

methanol

water

반응 조건

후처리

1. 1
   추출extracted with ethy acetate
2. 2
   건조The combined organics were dried over magnesium sulfate
3. 3
   여과filtered
4. 4
   농축concentrated in vacuo
5. 5
   기타Purification with via HPLC

실험 절차

To a solution of 3-(5-chloro-2-{2-[4-(4-fluoro-benzyl)-(2R,5S)-2,5-dimethyl-piperazin-1-yl]-2-oxo-ethoxy}-pyridin-3-yl)-propionic acid ethyl ester (0.081 g, 0.17 mmol) in tetrahydrofuran (2 mL), methanol (2 mL) and water (1 mL) was added lithium hydroxide monohydrate (0.013 g, 0.32 mmol). The reaction mixture was stirred at ambient temperature for 3 hours, neutralized with 0.2M hydrochloric acid and phosphate buffer (pH=7), and extracted with ethy acetate. The combined organics were dried over magnesium sulfate, filtered and concentrated in vacuo. Purification with via HPLC gave the title compound (0.020 g, LRMS: 464.4).

출처