carbon monoxide; bis(dibenzylideneacetone)-palladium(0) in tetrahydrofuran T=20°C; P=760.051 Torr; 24 h;

1: 4-biphenylylacetylene With n-butyllithium in tetrahydrofuran; hexane T=-78°C; 0.25 h; Inert atmosphere; 2: methyl iodide in tetrahydrofuran; hexane T=-78 - 20°C; 6 h; Inert atmosphere;

1: 4-phenyl-acetophenone With lithium diisopropyl amide in tetrahydrofuran T=-78°C; 1 h; 2: With diethyl chlorophosphate in tetrahydrofuran T=-78 - 20°C; 3 h; 3: methyl iodide With lithium diisopropyl amide in tetrahydrofuran T=-78 - 20°C;