1: 84 percent / potassium carbonate / methanol / 0.92 h / Ambient temperature 2: 23 percent / aluminum chloride / 12 h / 100 - 120 °C View Scheme

1: 84 percent / potassium carbonate / methanol / 0.92 h / Ambient temperature 2: 80 percent / phosphorous oxychloride / 1 h / Ambient temperature 3: 30 percent / NH3 / methanol / Ambient temperature View Scheme