tert-Butyl [(3S,5S,6R)-6-methyl-1-(2-methylpropyl)-2-oxo-5-phenylpiperidin-3-yl]carbamate → (3S,5S,6R)-3-amino-6-methyl-1-(2-methylpropyl)-5-phenylpiperidin-2-one

Participants

Reaction Conditions

Reaction Steps

A solution of tert-butyl[(3S,5S,6R)-6-methyl-1-(2-methylpropyl)-2-oxo-5-phenylpiperidin-3-yl]carbamate (140 mg, 0.39 mmol) in ethyl acetate (10 mL), pre-cooled to 0° C. was sparged with HCl gas for ˜1 min. The ice-bath was removed and the acidic solution was allowed to warm to 23° C. as stirring was continued for 2 h. The mixture was then concentrated to dryness to afford the title compound as a hydrochloride salt. MS: m/z=261.3 (M+1).

Provenance & Evidence