sodium hydroxide 20 h; Ambient temperature;

1: 61 percent / 2,4-dinitrophenoxamine / dimethylformamide / 120 h / Ambient temperature 2: 75 percent / 3 h / Heating 3: 51 percent / aq. acetic acid / 1 h / 80 °C 4: 65 percent / aq. sodium hydroxide / 20 h / Ambient temperature View Scheme

1: 51 percent / aq. acetic acid / 1 h / 80 °C 2: 65 percent / aq. sodium hydroxide / 20 h / Ambient temperature View Scheme

1: 75 percent / 3 h / Heating 2: 51 percent / aq. acetic acid / 1 h / 80 °C 3: 65 percent / aq. sodium hydroxide / 20 h / Ambient temperature View Scheme

sodium nitrite in water; acetic acid 0.5 h; Ambient temperature;