1: sodium tris(acetoxy)borohydride / tetrahydrofuran / 18 h / 20 °C / |Inert atmosphere 2: hydrogen bromide; acetic acid View Scheme

<b>Multi-step reaction with 3 steps<br /> </b>1.1: sec.-butyllithium / diethyl ether; cyclohexane; hexane / 1 h / -78 &deg;C / |Inert atmosphere; |Schlenk technique<br />1.2: 2 h / -78 &deg;C / |Inert atmosphere; |Schlenk technique<br />1.3: 16.08 h / -78 - 20 &deg;C / |Inert atmosphere; |Schlenk technique<br />2.1: tetrabutyl ammonium fluoride; water / toluene / 1.5 h / 20 &deg;C<br />3.1: osmium(VIII) oxide; sodium periodate<br /> <br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: tetrabutyl ammonium fluoride; water / toluene / 1.5 h / 20 &deg;C<br />2: osmium(VIII) oxide; sodium periodate<br /> <br /> &nbsp;

<b>Multi-step reaction with 6 steps<br /> </b>1.1: potassium carbonate<br />2.1: |Inert atmosphere; |Schlenk technique<br />3.1: triethylamine / toluene / 2 h / 150 &deg;C / |Inert atmosphere<br />4.1: sec.-butyllithium / diethyl ether; cyclohexane; hexane / 1 h / -78 &deg;C / |Inert atmosphere; |Schlenk technique<br />4.2: 2 h / -78 &deg;C / |Inert atmosphere; |Schlenk technique<br />4.3: 16.08 h / -78 - 20 &deg;C / |Inert atmosphere; |Schlenk technique<br />5.1: tetrabutyl ammonium fluoride; water / toluene / 1.5 h / 20 &deg;C<br />6.1: osmium(VIII) oxide; sodium periodate<br /> <br /> &nbsp;