1: 1.) OsO4, N-methylmorpholine, 2.) p-toluenesulfonic acid hydrate / 1.) THF, t-BuOH, H2O, r.t., 14 h, 2.) r.t., 12 h 2: 88 percent / LiOH / methanol; H2O / 18 h / Ambient temperature 3: 54 percent / dimethylsulfoxide / 24 h / 160 °C View Scheme