Trifluoroacetic acid → (2S)-2-phenyl-3-piperidone

Participants

Reaction Steps

Trifluoroacetic acid (4 mL) is added to a stirred, cooled (0° C.) solution of (2S)- 1-tert-butoxycarbonyl-2-phenylpiperidin-3-one (40 mg) in methylene chloride (2 mL) and the mixture is stirred at room temperature for 3 h. The solvent is evaporated under reduced pressure and the residue is partitioned between aqueous saturated sodium bicarbonate (50 ml) and ethyl acetate (3×50 ml). The combined organic fractions are washed with brine (50 ml), dried (MgSO4) and evaporated in vacuo to give (2S)-2-phenylpiperidin-3-one.

Provenance & Evidence