Hydrochloric Acid → HCID 57979792, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of tert-butyl (S)-1-[(R)-2-hydroxypropylamino]propan-2-ylcarbamate (3.0 g, 12.93 mmol) and diisopropylethylamine (3.38 mL, 19.4 mmol) in anhydrous dichloromethane (100 mL) at 0° C. was added benzyl chloroformate (2.65 g, 15.5 mmol). After stirring at 0° C. for 1 hour, the cooling bath was removed and the reaction mixture was allowed to stir at room temperature for an additional 45 minutes. Reaction was complete as determined by TLC. The reaction mixture was added with 1N HCl and extracted with dichloromethane. Organic layer washed with water then brine and it was dried over MgSO4. Solvent evaporation afforded benzyl {(2S)-2-[(tert-butoxycarbonyl)amino]propyl}[(2R)-2-hydroxypropyl]carbamate in 84.5% yield (3.95 g) as colorless gummy oil.

Provenance & Evidence