1: NH3 / CH2Cl2 / 0.05 h 2: 90 percent / triethylamine, trifluoroacetic anhydride / CH2Cl2 / 0.03 h / 0 °C 3: H2, trifluoroacetic acid / 10percent Pd/C / methanol / 2 h / 1551.4 Torr / Ambient temperature View Scheme

1: NH3 / CH2Cl2 / 0.05 h 2: 90 percent / triethylamine, trifluoroacetic anhydride / CH2Cl2 / 0.03 h / 0 °C View Scheme

ammonia in dichloromethane 0.05 h; Yield given;