1.1: 87 percent / Et3N / CH2Cl2 / 72 h 2.1: 75 percent / AcOH; Water / tetrahydrofuran / 36 h / 45 °C 3.1: 100 percent / Et3N / CH2Cl2 / 20 °C 4.1: 82 percent / dimethylsulfoxide / 0.5 h 5.1: 93 percent / TBAF / tetrahydrofuran 6.1: Cp2ZrCl2 / hexane; 1,2-dichloro-ethane / 40 °C 6.2: 86 percent / I2 / tetrahydrofuran; hexane; 1,2-dichloro-ethane / 0.5 h / -30 - 0 °C 7.1: 62 percent / PdCl2(CH3CN)2 / dimethylformamide / 72 h / 20 °C 8.1: 80 percent / t-BuOOH; Ti(OiPr)4; L-(+)-DIPT / CH2Cl2; 2,2,4-trimethyl-pentane / 36 h / -24 °C 9.1: tetra-n-propylammonium perruthenate; NMO; 4 Angstroem molecular sieves / acetonitrile; CH2Cl2 / 0.67 h 10.1: KHMDS / toluene; tetrahydrofuran / 2 h 11.1: tetrahydrofuran / 0.75 h 11.2: CAN / acetonitrile / 5 h / 0 - 20 °C 12.1: 57 percent / MCPBA; K2CO3 / CH2Cl2 / 0.5 h 13.1: O3 / CH2Cl2 / 0.03 h / -78 °C 13.2: 18 percent / NaBH4/Al2O3 / benzene / 14 h / 20 °C 14.1: 40 percent / SmI2 / tetrahydrofuran; 2-methyl-propan-2-ol / 0.08 h 15.1: 77 percent / TFA; anisole / CH2Cl2 / 0.42 h / -20 - -10 °C View Scheme