1: 2-decyl-1-tetradecyl bromide With magnesium in tetrahydrofuran 96 h; Heating; 2: 4,4'-dibromodiphenylacetylene With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride in tetrahydrofuran T=45°C; 96 h;

1: 80 percent / N-bromosuccinimide; PPh3 / CH2Cl2 / 12 h / 20 °C 2: 56 percent / PdCl2(dppf); Mg / tetrahydrofuran / 96 h / 45 °C View Scheme