1.1: triethylamine / dichloromethane / 0.17 h 1.2: 1 h / 20 °C 2.1: osmium(VIII) oxide; 2,6-dimethylpyridine; sodium periodate / 1,4-dioxane / 2 h 3.1: magnesium; iodine / tetrahydrofuran / 0.5 h / 20 °C / |Inert atmosphere 3.2: 2 h / 0 °C / |Inert atmosphere 4.1: triethylamine / dichloromethane / 1 h / 0 °C / |Inert atmosphere 5.1: lithium aluminium tetrahydride / tetrahydrofuran / 1 h / 0 °C 6.1: trimethylsilyl trifluoromethanesulfonate; sodium hydrogencarbonate / dichloromethane / 1 h / 20 °C View Scheme