1.1: 80 percent / CrO3; H2SO4 / acetone / 0 °C 2.1: KI; NaHCO3 (aq.) / 48 h 3.1: 72 percent / (Me3Si)3SiH; AIBN / toluene 4.1: BF3*Et2O / CH2Cl2 / 0 °C 5.1: NaOH (10 percent in MeOH) / Heating 6.1: diethyl ether 7.1: 89 percent / PCC / CH2Cl2 / 0 °C 8.1: 45 percent / KHMDS / tetrahydrofuran; hexamethylphosphoric acid triamide / 24 h / 50 °C 9.1: 80 percent / HgCl2; CaCO3 / acetonitrile; H2O 10.1: O2; Rose Bengal; HCl (dry) / methanol / 4 h / -78 °C / UV-irradiation 10.2: 10 percent / HClO4 (70 percent in ether) / 28 h View Scheme