potassium carbonate in ethylene glycol dimethyl ether 12 h; Heating;

1: 60 percent / triflic acid / 192 h / Ambient temperature 2: 82 percent / K2CO3 / 1,2-dimethoxy-ethane / 12 h / Heating View Scheme

1: 40 percent / KHCO3 / acetone / Heating 2: 60 percent / triflic acid / 192 h / Ambient temperature 3: 82 percent / K2CO3 / 1,2-dimethoxy-ethane / 12 h / Heating View Scheme

1: 65 percent / 10percent NaOH / ethanol / 240 h / 0 °C 2: 60 percent / AlCl3, N,N-dimethylaniline / CH2Cl2 / 0.08 h / 5 °C View Scheme