Ammonia → tert-butyl (2S,3R)-4-amino-3-hydroxy-1-phenylbutan-2-ylcarbamate

Participants

Reaction Steps

To a solution of ((S)-(S)-1-oxiranyl-2-phenyl-ethyl)-carbamic acid tert-butyl ester (D101) (25 g, 95.1 mmol, 1 equiv)) in MeOH (350 ml) was added aqueous ammonia (32% w/w, 180 ml, 3.2 mol, 3.3 equiv). The resulting mixture was stirred at room temperature for 16 h then concentrated in vacuo to give ((1S,2R)-3-amino-1-benzyl-2-hydroxy-propyl)-carbamic acid tert-butyl ester (D102) (25.2 g, 95%) as a white solid.

Provenance & Evidence