1: 76 percent / 30percent H2O2, LiOH / tetrahydrofuran; H2O / 2 h / 0 °C 2: 88 percent / LiAlH4 / diethyl ether / 5 h / 0 - 21 °C 3: 90 percent / Et3N, DMAP / CH2Cl2 / 18 h / Ambient temperature 4: imidazole / dimethylformamide / 24 h / Ambient temperature 5: NaI, NaHCO3 / acetone / 24 h / Heating 6: iPr2NH2, 2.5M n-BuLi / tetrahydrofuran; hexane / 1.) -78 deg C, 30 min, 2.) -50 deg C, 10 min, then 0 deg C, 45 min 7: AcOH, 1M HCl / tetrahydrofuran; H2O / 48 h / 50 - 55 °C View Scheme