1: hydrogen / Pd-BaSO4, sulphur-quinoline poison / xylene / Heating 2: 90 percent / HCl (gas) / benzene / overnight 3: 70 percent / hydrogen / Pd-C / tetrahydrofuran / Ambient temperature 4: 45 percent / diethyl ether; tetrahydrofuran / 0.33 h 5: 90 percent / hydrazine hydrate / Raney-Ni / methanol / 1 h / Heating 6: 85 percent / pyridine / 6 h / Ambient temperature 7: 70 percent / PTSA / benzene / 0.5 h / Heating 8: 95 percent / liquor ammonia / methanol / 0.75 h View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: 85 percent / KOH / H₂O / 1 h / Heating<br />2: thionyl chloride / benzene / 2 h / Heating<br /> <br /> &nbsp;