Acetyl chloride → D-Serine methyl ester hydrochloride

D-serine (100 g, 0.9515 mole) was suspended in 600 ml methanol at room temperature. Acetyl chloride (224.0 g, 2.8545 mole) was added drop wise at −5° C. to 0° C. and stirred for 30 minutes. The reaction mixture was refluxed for 15 hours. Evaporation of the reaction mixture under reduced pressure followed by crystallization of the resulting residue from methanol and methyl tert-butyl ether, resulted in colorless solid of D-serine methyl ester hydrochloride (134.7 g, Yield: 91%, HPLC: 99.6%)

1. temperatureThe reaction mixture was refluxed for 15 hours
2. customEvaporation of the reaction mixture under reduced pressure
3. customfollowed by crystallization of the resulting residue from methanol and methyl tert-butyl ether

ORD record

ord-3c91b85feed141eba2da4cf9e8233326

Source dataset

uspto-grants-2016_09

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09447024B1