1,2-Dichloroethane → (S)-3-amino-2-hydroxy-pentanoic acid benzylamide

Participants

Reaction Steps

3-tert-Butoxycarbonylamino-2-hydroxy-pentanoic acid (300 mg, 1.29 mmol) was combined with EDC (400 mg, 2.1 mmol) and HOBt (400 mg, 2.6 mmol). A solution of benzylamine (0.22 mL) and 4-methylmorpholine (0.5 mL) in dichloromethyl (4 mL) was added in one portion. The mixture was stirred at ambient temperature for 2 hours. After dilution with ethyl acetate (150 mL), the solution was washed with 1N aqueous HCl, water, saturated aqueous NaHCO3 solution and brine. The resultant mixture was dried with magnesium sulfate and evaporated under vacuum to yield (S)-3-amino-2-hydroxy-pentanoic acid benzylamide (380 mg) as a white solid.

Provenance & Evidence