1: 50 percent / toluene / 2 h / Ambient temperature 2: 50 percent / lithium iodide / dimethylformamide / 2 h / Heating 3: KOH, hydrogen peroxyde / methanol / 3 h / 80 °C 4: 49 percent / tetraethylammonium-tetrahydridoborate / CH2Cl2 / 0.5 h 5: CH2Cl2; methanol / 15 h / Ambient temperature 6: 96 percent / Huenig base / acetonitrile / 3 h / Heating 7: 1.) sodium hydride; 2.) lithium iodide / 1.) dioxan, ethanol, 15 min; 2.) dimethylformamide, reflux, 4.5 h 8: 70 percent / borontrifluorate etherate / CHCl3 / 17 h / Ambient temperature 9: 70 percent / Raney-Ni / acetone View Scheme