Ammonia → Carbamic acid, [(1S)-3-amino-3-oxo-1-phenylpropyl]-, 1,1-dimethylethyl ester

Participants

Reaction Steps

A mixture of 1-hydroxybenzotriazole hydrate (3.46 g, 25.6 mmol), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (4.91 g, 25.6 mmol), and (S)-N-tert-butoxycarbonyl-3-amino-3-phenylpropanoic acid (6.80 g, 25.6 mmol) in dichloromethane (250 ml) was stirred at room temperature for 1 hour. 0.88 Ammonia (20 ml) was added and the mixture stirred at room temperature for a further 18 hours. The resulting solid was filtered off and washed with sodium bicarbonate solution, then water and dried under vacuum at 50° C. to afford the title compound, 6.78 g.

Provenance & Evidence