[RhCl(η2:η2-cycloocta-1,5-diene)]2 in 2-cyclohexylethanol T=160°C; 15 h; Inert atmosphere;

tetraethylammonium p-toluenesulfonate in N,N-dimethyl-formamide electrochemical reduction using diaphragm;

NiCl2((PPh3)P)2; 4,5-dimethyl-2-phenyl-[1,3,2]dioxaborolane 1.) THF, hexane, 0 deg C, 15 min, 2.) THF, hexane, 12 h, 20 deg C; Yield given. Multistep reaction. Yields of byproduct given;