1: 52 percent / CsF / dimethylformamide / 6 h / 120 °C 2: 87 percent / POCl3 / 48 h / Ambient temperature View Scheme

methanol; potassium carbonate im geschlossenen Rohr;

1: 52 percent / CsF / dimethylformamide / 6 h / 120 °C 2: 87 percent / POCl3 / 48 h / Ambient temperature 3: 70 percent / BCl3 / CH2Cl2 / 0.25 h / Ambient temperature View Scheme

caesium carbonate in N,N-dimethyl-formamide T=80 - 100°C; 2 h;