Trifluoroacetic acid → Trifluoroacetic acid

Participants

Reaction Steps

To a solution of tert-butyl 4-(1-(benzyloxycarbonylamino)-3-ethoxy-3-oxopropyl)piperidine-1-carboxylate (660 mg, 1.52 mmol) in CH2Cl2 (5 mL), TFA (5 mL) was added. The mixture was stirred at room temperature for 3 h. It was concentrated in vacuo. The residue was purified by HPLC to give ethyl 3-(benzyloxycarbonylamino)-3-(piperidin-4-yl)propanoate as TFA salt. The salt was dissolved in EtOAc (50 mL), which was washed with 5% NaHCO3, dried over Na2SO4, concentrated in vacuo to give ethyl 3-(benzyloxycarbonylamino)-3-(piperidin-4-yl)propanoate as free base (102 mg).

Provenance & Evidence