4-Aminobenzoic Acid → Tert-butyl 4-((4-aminobenzamido)methyl)piperidine-1-carboxylate

Participants

Reaction Steps

To a solution of 4-(aminomethyl)-Boc-piperidine (0.313 g, 1.458 mmol), 4-aminobenzoic acid (0.200 g, 1.458 mmol) and N-methyl morpholine (0.242 mL, 2.187 mmol) in dichloromethane (2 mL) was added 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (0.422 g, 2.187 mmol) and the reaction mixture stirred at room temperature overnight. The reaction was then washed with water and brine. The organic phase was dried over MgSO4 and the solvent removed in vacuo. The residue was purified by silica gel column chromatography using a 0-100% EtOAc in hexane gradient to afford tert-butyl 4-((4-aminobenzamido)methyl)piperidine-1-carboxylate. LCMS (3) Rt: 1.91 min; m/z (ES+) 334.

Provenance & Evidence