1.1: thiocarbonyl diimidazole; 4-DMAP / tetrahydrofuran / 2 h / 90 °C 1.2: 0.823 g / n-Bu3SnH; AIBN / benzene / 1 h / 80 °C 2.1: [bis(trifluoroacetoxy)iodobenzene] / methanol; tetrahydrofuran / 0.25 h / 20 °C 2.2: 95 percent / pTSA*H2O / dioxane; H2O / 2 h / 50 °C 3.1: 35 percent / LDA / tetrahydrofuran / 0.67 h / -78 °C 4.1: Dess-Martin periodinane / CH2Cl2 / 1 h / 20 °C 5.1: 0.230 g / sodium borohydride / methanol; tetrahydrofuran / 1 h / -78 - 20 °C 6.1: 93 percent / hydrogen fluoride-pyridine; pyridine / tetrahydrofuran / 2 h / 20 °C 7.1: 85 percent / 2,6-lutidine / CH2Cl2 / 0.5 h / -30 °C 8.1: 94 percent / Dess-Martin periodinane / CH2Cl2 / 1.5 h / 25 °C 9.1: 86 percent / [Mo(CHMe2Ph)(N-(2,6-(i-Pr)2C6H3))(OCMe(CF3)2)2] / benzene / 2 h / 55 °C 10.1: HF*pyridine / tetrahydrofuran / 1.5 h / 20 °C 11.1: 97 percent / 3,3-dimethyldioxirane / CH2Cl2; acetone / 2.5 h / -78 - -50 °C View Scheme

1.1: thiocarbonyl diimidazole; 4-DMAP / tetrahydrofuran / 2 h / 90 °C 1.2: 0.823 g / n-Bu3SnH; AIBN / benzene / 1 h / 80 °C 2.1: [bis(trifluoroacetoxy)iodobenzene] / methanol; tetrahydrofuran / 0.25 h / 20 °C 2.2: 95 percent / pTSA*H2O / dioxane; H2O / 2 h / 50 °C 3.1: 35 percent / LDA / tetrahydrofuran / 0.67 h / -78 °C 4.1: Dess-Martin periodinane / CH2Cl2 / 1 h / 20 °C 5.1: 0.230 g / sodium borohydride / methanol; tetrahydrofuran / 1 h / -78 - 20 °C 6.1: 93 percent / hydrogen fluoride-pyridine; pyridine / tetrahydrofuran / 2 h / 20 °C 7.1: 85 percent / 2,6-lutidine / CH2Cl2 / 0.5 h / -30 °C 8.1: 94 percent / Dess-Martin periodinane / CH2Cl2 / 1.5 h / 25 °C 9.1: 86 percent / [Mo(CHMe2Ph)(N-(2,6-(i-Pr)2C6H3))(OCMe(CF3)2)2] / benzene / 2 h / 55 °C 10.1: HF*pyridine / tetrahydrofuran / 1.5 h / 20 °C View Scheme