1: 92 percent / OsO4; NaIO4 / tetrahydrofuran; H2O 2: 64 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2 h / 20 °C 3: 74 percent / CrO3; H2SO4 / H2O / 0.5 h / 0 °C View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: 91 percent / NaBH₄ / ethanol / 0.5 h / 0 &deg;C<br />2: 84 percent / imidazole / dimethylformamide / 1 h / 0 &deg;C<br /> <br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '103853', constants.ctx, '0')">1H-imidazole</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '605365', constants.ctx, '0')">N,N-dimethyl-formamide</a> <br />T=0&deg;C;&nbsp;1&nbsp;h;&nbsp;<br /> &nbsp;