water; sodium carbonate in ethanol Ambient temperature;

1: 65 percent / aluminium trichloride / 1.) room temp., 1.5 h, 2.) reflux, 2 h 2: 83 percent / potassium carbonate / dimethylformamide / 4 h / 80 °C 3: 79 percent / 1.) H2O, sodium carbonate, 2.) acid / ethanol / Ambient temperature View Scheme

1: 83 percent / potassium carbonate / dimethylformamide / 4 h / 80 °C 2: 79 percent / 1.) H2O, sodium carbonate, 2.) acid / ethanol / Ambient temperature View Scheme

1: 65 percent / aluminium trichloride / 1.) room temp., 1.5 h, 2.) reflux, 2 h 2: 83 percent / potassium carbonate / dimethylformamide / 4 h / 80 °C 3: 79 percent / 1.) H2O, sodium carbonate, 2.) acid / ethanol / Ambient temperature View Scheme