反应详情

温度

-10 °C

D-Serine methyl ester hydrochloride (100 g, 0.6430 mole) was suspended in 500 ml dichloromethane. To this was added triethylamine (136.6 g, 1.35 mole) at 0-5° C., followed by acetyl chloride (53.06 g, 0.6751 mole) drop wise at −10° C. The reaction mixture was stirred at −10° C. for 3 hours, filtered to remove salts and the filtrate was evaporated. The resulting residue was suspended in 400 ml ethyl acetate and stirred for one hour. Salts were filtered and the ethyl acetate layer was concentrated under reduced pressure to get N-acetyl D-serine methyl ester as an oil (93.22 g, Yield: 90%, HPLC: 98.7%),

1. filtrationfiltered
2. customto remove salts
3. customthe filtrate was evaporated
4. stirringstirred for one hour
5. filtrationSalts were filtered
6. concentrationthe ethyl acetate layer was concentrated under reduced pressure