1.1: 99 percent / tetrahydrofuran / 5 h / -78 °C 2.1: 86 percent / KOBu-t / tetrahydrofuran / 3 h / 0 °C 3.1: DIBAL-H / tetrahydrofuran; heptane / 4.5 h / -78 °C 4.1: KHMDS / tetrahydrofuran; toluene / 1 h / -78 - 0 °C 4.2: 0.16844 g / tetrahydrofuran; toluene / 0 - 20 °C 5.1: 87 percent / Dess-Martin periodinane / CH2Cl2 / 5 h / 20 °C 6.1: Hg(OAc)2 / tetrahydrofuran / -10 - 20 °C 6.2: 91 percent / aq. KI / tetrahydrofuran 7.1: NaIO4; RuCl3 / ethyl acetate; acetonitrile; H2O / 22 h / 30 °C 8.1: 0.11704 g / diethyl ether / 0.17 h 9.1: 71 percent / Zn TiCl4 / tetrahydrofuran / 0.25 h / 25 °C 10.1: aq. LiOH / methanol / 1 h / Heating 11.1: 0.02051 g / liquid NH3; Li / tetrahydrofuran / -78 °C View Scheme