Ammonium Acetate → tert-Butyl 4-(1-aminoethyl)piperidine-1-carboxylate

Participants

Reaction Steps

To a solution of ter-butyl 4-acetylpiperidine-1-carboxylate (10 g, 44.05 mmol) in tetrahydrofuran (100 ml) and methanol (1 (ml) were added ammonium acetate (20 g, 264.3 mmol) and sodium cyanotrihydroborate (20 g, 264.3 mmol). The reaction mixture was stirred at room temperature overnight. The reaction mixture was concentrated in vacuum. The crude product was added water (100 ml), and extracted with ethyl acetate (50 mL×3). The organic layer was dried over sodium sulfate and concentrated to give tert-butyl 4-(1-aminoethyl)piperidine-1-carboxylate (6 g, yield: 60%) as a colorless liquid. LRMS (M+H+) m/z: calcd 228.15. found 229.

Provenance & Evidence