ammonia in methanol 0.333333 h; Ambient temperature;

1: 80 percent / Et3N, H2N-OH*HCl / ethanol / 3 h / Ambient temperature 2: 72 percent / pyridine / 3 h / Ambient temperature 3: 97 percent / dimethylformamide / 3 h / 80 °C 4: 58 percent / PPh3 / 24 h / 150 °C View Scheme