1.1: sodium hydride; hydrogenchloride / methanol; water; 1,4-dioxane / 0.5 h / 0 - 20 °C 2.1: triethylamine / dichloromethane / 0.17 h 2.2: 1 h / 20 °C 3.1: osmium(VIII) oxide; 2,6-dimethylpyridine; sodium periodate / 1,4-dioxane / 2 h 4.1: magnesium; iodine / tetrahydrofuran / 0.5 h / 20 °C / |Inert atmosphere 4.2: 2 h / 0 °C / |Inert atmosphere 5.1: triethylamine / dichloromethane / 1 h / 0 °C / |Inert atmosphere 6.1: lithium aluminium tetrahydride / tetrahydrofuran / 1 h / 0 °C 7.1: trimethylsilyl trifluoromethanesulfonate; sodium hydrogencarbonate / dichloromethane / 1 h / 20 °C View Scheme

<b>Multi-step reaction with 3 steps<br /> </b>1: copper(II) sulfate / dichloromethane / 24 h / 23 &deg;C<br />2: dichloromethane; tetrahydrofuran / 1 h / -78 &deg;C / |Inert atmosphere<br />3: sodium hydride / N,N-dimethyl-formamide / 6 h / 0 - 20 &deg;C<br /> <br /> &nbsp;