With  di-μ-chloro-bis(η4-1,5-cyclooctadiene)diiridium; samarium diiodide in  tetrahydrofuran T=25°C; 6 h;  Inert atmosphere;  SolventReagent/catalyst;  regioselective reaction;   

Multi-step reaction with 2 steps 1.1: s-BuLi / tetrahydrofuran; cyclohexane / 1 h / -78 °C1.2: tetrahydrofuran; cyclohexane / 0.5 h / -78 °C2.1: 281 mg / tetra-n-butylammonium fluoride / Pd2(dba)3 / tetrahydrofuran / 20 °C