1: 62.5 percent / nitromethane / 18 h / Ambient temperature 2: 90 percent / NH3/MeOH / 24 h / Ambient temperature 3: 80 percent / pyridine / 20 h / Ambient temperature 4: 55 percent / KMnO4 / aq. acetic acid / 3 h / 0 °C 5: 87 percent / methanol / 2 h / Heating View Scheme

2 h; Heating;