Acetone → (2S,3S)-3-Amino-2-hydroxy-4-phenylbutyric acid hydrochloride

Participants

Reaction Conditions

Reaction Steps

(4S,5S)—N-Cyclopropyl-2-isopropyl-4-benzyl-4,5-dihydro-1,3-oxazole-5-carboxamide (63 mg), acetone (2.5 ml) and concentrated hydrochloric acid (0.25 g) were mixed, and the mixture was stirred at 50° C. for 23 hours. The reaction mixture was concentrated, and isopropanol (5 ml) was added. The mixture was concentrated under reduced pressure. The same operation was further repeated, and then isopropanol (3 ml) was added to precipitate a crystal. The crystal was collected by filtration under reduced pressure, and was dried in vacuum to obtain the title compound as a white crystal (23 mg, yield: 36%).

Provenance & Evidence