periodic acid; ruthenium(IV) oxide in tetrachloromethane; water; acetonitrile T=40°C; 22 h;

<b>Multi-step reaction with 2 steps<br /> </b>1: 84 percent / titanium(IV) isopropoxide / tetrahydrofuran; diethyl ether / 0.67 h / 20 &deg;C<br />2: 92 percent / pyridine / CH₂Cl₂ / 18 h / 20 &deg;C<br /> <br /> &nbsp;