1: 12.34 g / H2 / Raney nickel / ethanol / 3040 Torr 2: 1.) sodium cyanoborohydride, 2.) bromocresol green, conc. HCl / 1.) THF, EtOH, 2.) THF, EtOH, 20 min 3: 2.775 g / C2H5ONa / ethanol / Heating 4: 91 percent / CH2Cl2 / 1 h / Ambient temperature 5: 95 percent / NaOH 6: 1.) Et3N, t-BuCOCl, 2.) n-BuLi 7: 4 N aq. HCl / dioxane 8: iPr2NEt / acetonitrile 9: 78 percent / aq. LiOH, 30percent aq. H2O2 / tetrahydrofuran / 0.5 h View Scheme