1: 83 percent / 15 h / 90 °C 2: 73 percent / POCl3 / toluene / 15 h / 90 °C 3: 85 percent / H2, conc. HCl / 10percent Pd/C / ethanol / 4 h / 60 °C / 2068.6 Torr 4: 95 percent / 1 N NaOH / ethanol / 3 h / Heating 5: SOCl2 / 0.5 h / Heating 6: NH3 (gas) / CH2Cl2 / 15 h 7: 85 percent / POCl3 / CHCl3 / 15 h / Heating View Scheme