1: H2 / Pd-C / 5320 Torr / Ambient temperature 2: HCl / Ambient temperature 3: 1.) Et3N / 1) CH2Cl2, 20 min, room temperature; 2) CH2Cl2, room temperature, overnight 4: 77 percent / Ph3P, diethylazodicarboxylate / tetrahydrofuran / Ambient temperature 5: 1.) aq. HCl, 2.) aq. NaHCO3 / 1) CH3OH, room temperature, 1.5 h; 2) room temperature, 16 h View Scheme