反应详情

温度

25 °C

To a solution of 4[(pyridine-3-carbonyl)-amino]-butyric acid methyl ester (0.8 g, 3.5 mmol), in THF (14 mL) was added LiOH (0.75 g, 17.9 mmol), dissolved in water (6 mL). The mixture was allowed to stir at room temperature (25° C.) overnight. 50% starting material remains as such. Then reaction mixture heated at (45° C.). The reaction did not progress. The reaction mixture was worked up with chloroform to recover the starting material. The aqueous layer was diluted with water, acidified with 1.5N HCl till (pH=2-3), extracted with ethyl acetate (150 mL) and dried over sodium sulphate, concentrated to obtain yellow colour solid (0.6 g, 80%).

1. customThen reaction mixture
2. temperatureheated at (45° C.)
3. customto recover the starting material
4. additionThe aqueous layer was diluted with water
5. extractionextracted with ethyl acetate (150 mL)
6. dry with materialdried over sodium sulphate
7. concentrationconcentrated