1: bis-phenylsulfonyl methane With sodium hydride in tetrahydrofuran T=0°C; 0.5 h; Inert atmosphere; 2: 1-[(E)-3-bromo-1-propenyl]benzene With sodium iodide in tetrahydrofuran T=20°C; 14 h; Inert atmosphere;

[2,2']bipyridinyl; W(acetonitrile)3(CO)3 in tetrahydrofuran 9 h; Heating;

titanium(IV) isopropylate; tris(dibenzylideneacetone)dipalladium (0); triphenylphosphine 1) C2H4Cl2, rt, 10 min; 2) C2H4Cl2, 85 deg C, 12 h; further conditions; Yield givenMultistep reaction;