1: K2CO3; KI / 10 h / Heating 2: Br2 / CH2Cl2 / 18 h / 0 - 20 °C 3: dimethylformamide / 24 h / Heating View Scheme

1: Br2 / CH2Cl2 / 18 h / 0 - 20 °C 2: dimethylformamide / 24 h / Heating View Scheme

in N,N-dimethyl-formamide 6 h; Heating;

1: K2CO3; KI / 10 h / Heating 2: Br2 / CH2Cl2 / 18 h / 0 - 20 °C 3: dimethylformamide / 24 h / Heating View Scheme

potassium carbonate in N,N-dimethyl-formamide T=20°C; 72 h;

1: 77 percent / K2CO3 / dimethylformamide / 5 h / 80 °C 2: 63 percent / dimethylformamide / 5 h / Heating View Scheme

in N,N-dimethyl-formamide Heating;

1: 63 percent / K2CO3 / dimethylsulfoxide / 8 h / 100 °C 2: 88 percent / Br2 / CH2Cl2 / 2 h / 25 °C 3: 66 percent / dimethylformamide / 6 h / Heating View Scheme

quinoline; tetrachlorosilane T=190°C; 1 h;

in further solvent(s) (N2); mixt. of dicyano alkoxy benzene and anhydrous CuCl2 in 2-(dimethylamino)ethanol was refluxed for 78 h, then diluted with CHCl3 and poured into acetone.; ppt. filtered, extd. with acetone (24 h), methanol (48 h), ether (24 h); recrystn. from hexane; further purifn. by chromy. (SiO2; CHCl3) under slightly elevated pressure; purity checked by TLC (SiO2; CHCl3/acetone 10:1 vol);