7250-55-7

1830-54-2

7250-55-7

To a stirred solution of dimethyl 3-oxoglutarate (17.7 mL, 120.6 mmol) in methanol (315 mL) at 0 °C was added sodium borohydride (3.9 g, 102.5 mmol) in batches. After the reaction mixture was brought to room temperature, the reaction was continued with stirring for 24 hours. Upon completion of the reaction, the pH of the reaction mixture was adjusted to 5-6 by adding solid citric acid to quench the reaction. Subsequently, silica gel (about 1 g) was added to the reaction mixture and the solvent was removed by rotary evaporation. The residue was purified by silica gel column chromatography (eluent: ethyl acetate/hexane, 1:1) to afford dimethyl 3-hydroxyglutarate (19.98 g, 94% yield) as a colorless oil.