1.1: sodium hydride / tetrahydrofuran / 0 - 20 °C 1.2: 0 - 20 °C 2.1: [Ni0(1,5-cyclooctadiene)2]; dimethyl zinc; tri-cyclo-hexyl-phosphine / ethylene glycol dimethyl ether; toluene / 12 h / 40 °C / Inert atmosphere View Scheme