反应 #47521

反应方程式

(S)-3-cyclohexyl-2-[4-(2,4-dichloro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-propionic acid methyl ester

lithium hydroxide

→

(S)-3-cyclohexyl-2-[4-(2,4-dichloro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-propionic acid

收率 78.0%

溶剂

tetrahydrofuran water

反应条件

后处理

1. 1
   浓缩After this time, the mixture was concentrated
2. 2
   workup.ADDITIONthe reaction mixture was diluted with water
3. 3
   其他The reaction mixture was acidified with 2N hydrochloric acid, during which time precipitation
4. 4
   其他The precipitate was removed by filtration
5. 5
   洗涤washed with cold water
6. 6
   其他dried in vacuo

实验过程

To a stirred solution of (S)-3-cyclohexyl-2-[4-(2,4-dichloro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-propionic acid methyl ester (340 mg, 0.001 mol) in tetrahydrofuran-water (3:1, 10 mL) was added lithium hydroxide (106 mg, 0.003 mol). The reaction mixture was stirred at 23° C. for 2 h. After this time, the mixture was concentrated and the reaction mixture was diluted with water. The reaction mixture was acidified with 2N hydrochloric acid, during which time precipitation occurred. The precipitate was removed by filtration, washed with cold water and dried in vacuo to obtain (S)-3-cyclohexyl-2-[4-(2,4-dichloro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-propionic acid (300 mg, 78%) as a light yellow solid.

来源