tetrakis(triphenylphosphine) palladium(0) in tetrahydrofuran 0.75 h; Ambient temperature;

bis(1,5-cyclooctadiene)nickel (0); diethylaluminium chloride; cyclohexa-1,3-diene; triphenylphosphine in toluene T=50°C; 48 h; Yield given. Yields of byproduct given;

bis(1,5-cyclooctadiene)nickel (0); diethylaluminium chloride; triphenylphosphine in toluene T=50°C; 48 h; other ligands, var. P/Ni and Al/Ni ratios, var. reaction times; Product distribution;