hydrogenchloride 2 h; Heating;

1.1: aq. KOH / dimethylformamide / 0.17 h / 20 °C 1.2: 72 percent / dimethylformamide / 0.08 h / 20 °C 2.1: 87 percent / MeONa / methanol / 0.25 h / Heating 3.1: 70 percent / hydrochloric acid / 2 h / Heating View Scheme

1: 87 percent / MeONa / methanol / 0.25 h / Heating 2: 70 percent / hydrochloric acid / 2 h / Heating View Scheme