反应详情

温度

25 °C

A solution of 2-(3-chloro-4-methanesulfonyl-phenyl)-3-(tetrahydro-furan-3-yl)-propionic acid methyl ester (729 mg, 2.10 mmol) in ethanol (20 mL) was treated with a solution of potassium hydroxide (694 mg, 10.51 mmol) in water (7 mL). The reaction was stirred for 3 h at 25° C., concentrated in vacuo to remove the ethanol, and then was acidified to pH=2 with a 1N aqueous hydrochloric acid solution. The resulting mixture was then extracted with methylene chloride (3×10 mL). The organic layers were dried over sodium sulfate, filtered, and concentrated in vacuo to afford 2-(3-chloro-4-methanesulfonyl-phenyl)-3-(tetrahydro-furan-3-yl)-propionic acid (654 mg, 94%) as a white foam: (ES)+-HRMS m/e calcd for C14H17ClO5S (M+Na)+ 355.0377, found 355.0382.

1. concentrationconcentrated in vacuo
2. customto remove the ethanol
3. extractionThe resulting mixture was then extracted with methylene chloride (3×10 mL)
4. dry with materialThe organic layers were dried over sodium sulfate
5. filtrationfiltered
6. concentrationconcentrated in vacuo