1: 100 percent / H2, Et3N / 50percent Pd/C / ethanol / 24 h / 43 °C / 2585.7 - 3102.9 Torr 2: 65 percent / 6 N HCl / methanol / 2 h / Heating 3: 78 percent / POCl3 / 0.03 h / 82.3 °C 4: 98 percent / KOH / 20 h / Ambient temperature View Scheme

potassium hydroxide 20 h; Ambient temperature;

1: 65 percent / 6 N HCl / methanol / 2 h / Heating 2: 78 percent / POCl3 / 0.03 h / 82.3 °C 3: 98 percent / KOH / 20 h / Ambient temperature View Scheme

1: 78 percent / POCl3 / 0.03 h / 82.3 °C 2: 98 percent / KOH / 20 h / Ambient temperature View Scheme