1.1: 91 percent / Dess-Martin periodinane; pyridine / CH2Cl2 2.1: n-BuLi / tetrahydrofuran 2.2: 94 percent / NH4Cl / tetrahydrofuran 3.1: 91 percent / pyridine / CH2Cl2 4.1: 77 percent / Na/Hg / tetrahydrofuran; methanol / -30 °C 5.1: 88 percent / TBAF / tetrahydrofuran 6.1: 99 percent / I2; PPh3; imidazole / benzene 7.1: 88 percent / dimethylformamide 8.1: 82 percent / DIBAL-H / CH2Cl2 / -78 °C View Scheme