A mixture of tert-butyl hexahydro-1H-pyrrolo[3,4-c]pyridine-5(6H)-carboxylate (1.70 g), 1-bromo-3-chloropropane (1.70 mL) and K2CO3 (3.30 g) in acetone was heated to reflux for 10 h, then cooled to rt and filtered. The filtrate was concentrated in vacuo and the residue was chromatographed with a silica gel column (eluting agent: 20:1 (v/v) DCM/MeOH) to give the title compound as yellow oil (0.79 g, 35.00%), HPLC: 80.00%. The compound was characterized by the following spectroscopic data: MS (ESI, pos. ion) m/z: 303.2 (M+1).
