potassium carbonate; potassium iodide in N,N-dimethyl-formamide T=70°C; 22 h;

1: 12 g / copper powder, anhydrous potassium carbonate / dimethylformamide / 3.5 h / Heating 2: 9.5 g / polyphosphoric acid / 3 h / 100 °C 3: 7 g / potassium hydroxide / acetone / 6.5 h / Heating 4: 1.54 g / 47percent hydrobromic acid / acetic acid / 4 h / Heating 5: 161 mg / anhydrous potassium carbonate, potassium iodide / dimethylformamide / 22 h / 70 °C 6: 70 mg / N,N-diethylaniline / 3 h / Heating View Scheme

1: 9.5 g / polyphosphoric acid / 3 h / 100 °C 2: 7 g / potassium hydroxide / acetone / 6.5 h / Heating 3: 1.54 g / 47percent hydrobromic acid / acetic acid / 4 h / Heating 4: 161 mg / anhydrous potassium carbonate, potassium iodide / dimethylformamide / 22 h / 70 °C 5: 70 mg / N,N-diethylaniline / 3 h / Heating View Scheme

1: 7 g / potassium hydroxide / acetone / 6.5 h / Heating 2: 1.54 g / 47percent hydrobromic acid / acetic acid / 4 h / Heating 3: 161 mg / anhydrous potassium carbonate, potassium iodide / dimethylformamide / 22 h / 70 °C 4: 70 mg / N,N-diethylaniline / 3 h / Heating View Scheme

1: 1.54 g / 47percent hydrobromic acid / acetic acid / 4 h / Heating 2: 161 mg / anhydrous potassium carbonate, potassium iodide / dimethylformamide / 22 h / 70 °C 3: 70 mg / N,N-diethylaniline / 3 h / Heating View Scheme

1: 12 g / copper powder, anhydrous potassium carbonate / dimethylformamide / 3.5 h / Heating 2: 9.5 g / polyphosphoric acid / 3 h / 100 °C 3: 7 g / potassium hydroxide / acetone / 6.5 h / Heating 4: 1.54 g / 47percent hydrobromic acid / acetic acid / 4 h / Heating 5: 161 mg / anhydrous potassium carbonate, potassium iodide / dimethylformamide / 22 h / 70 °C 6: 70 mg / N,N-diethylaniline / 3 h / Heating View Scheme

1: 161 mg / anhydrous potassium carbonate, potassium iodide / dimethylformamide / 22 h / 70 °C 2: 70 mg / N,N-diethylaniline / 3 h / Heating View Scheme

N,N-diethylaniline 3 h; Heating;