1: 90 percent / HCl (gas) / benzene / overnight 2: 70 percent / hydrogen / Pd-C / tetrahydrofuran / Ambient temperature 3: 45 percent / diethyl ether; tetrahydrofuran / 0.33 h 4: 90 percent / hydrazine hydrate / Raney-Ni / methanol / 1 h / Heating 5: 85 percent / pyridine / 6 h / Ambient temperature 6: 70 percent / PTSA / benzene / 0.5 h / Heating 7: 95 percent / liquor ammonia / methanol / 0.75 h View Scheme