1: 99 percent / LiOH*H2O, 30percent aq. H2O2 / tetrahydrofuran; H2O / 1 h / 0 °C 2: 77 percent / HCl, H2 / 10percent Pd/C / tetrahydrofuran / 20 h / 2585.7 Torr 3: 81 percent / iPr2NEt / methanol View Scheme