1: 79 percent / NaIO4 / H2O; 2-methyl-propan-2-ol / 15 h / 20 °C 2: t-BuOCl / 1 h / 0 °C 3: 14.8 g / CuSO4; H2SO4 / acetic acid / 96 h / 20 °C 4: 75 percent / Na2CO3; H2O / methanol / 5 h / 0 °C 5: 90 percent / pyridinium chlorochromate / CH2Cl2 / 1.5 h / 0 °C 6: 65 percent / p-toluenesulfonic acid / methanol / 18 h / 20 °C 7: 58 percent / K2HPO4; KH2PO4; NaBr / dimethylsulfoxide / 20 h / 80 °C View Scheme