1.1: NaH / tetrahydrofuran / 0.25 h / 0 °C 1.2: 70 percent / n-butyl ammonium iodide / tetrahydrofuran / 8 h / Heating 2.1: 64 percent / Grubb's ruthenium catalyst / CH2Cl2 / 24 h / 20 °C 3.1: 90 percent / H2 / Pd/C View Scheme