1: 74 percent / imidazole / dimethylformamide / 6 h / 40 °C 2: 1.) BH3*SMe, 2.) TMEDA / 1.) THF, 70 deg C, 2 h, 2.) THF, Et2O, RT, 6 h 3: 80 percent / H2 / 10percent Pd/C / methanol / 3 h / 15001.2 Torr 4: 51 percent / NaIO4, RuCl3 / acetonitrile; CCl4; H2O / 1.5 h / Ambient temperature 5: 70 percent / 6 M aq. HCl / 3 h / Heating View Scheme