1: 93 percent / PyH*OTs / ethanol / 6 h / 60 °C 2: 92 percent / 6percent Na-Hg, Na2HPO4 / methanol / 24 h / 25 °C 3: 78 percent / pyridinium dichromate / dimethylformamide / 6 h / 25 °C View Scheme

1: 93 percent / PyH*OTs / ethanol / 6 h / 60 °C 2: 92 percent / 6percent Na-Hg, Na2HPO4 / methanol / 24 h / 25 °C 3: 78 percent / pyridinium dichromate / dimethylformamide / 6 h / 25 °C View Scheme

<b>Multi-step reaction with 3 steps<br /> </b>1: 95 percent / mCPBA / CH₂Cl₂ / 1 h / 25 &deg;C<br />2: 96 percent / PyH*OTs / CH₂Cl₂ / 24 h / 25 &deg;C<br />3: 1.) n-BuLi / 1.) THF, -78 deg C; 2.) -50 deg C, 2 h<br /> <br /> &nbsp;

<b>Multi-step reaction with 5 steps<br /> </b>1: 90 percent / mCPBA<br />2: PyH*OTs / ethanol / 6 h / 60 &deg;C<br />3: 95 percent / mCPBA / CH₂Cl₂ / 1 h / 25 &deg;C<br />4: 96 percent / PyH*OTs / CH₂Cl₂ / 24 h / 25 &deg;C<br />5: 1.) n-BuLi / 1.) THF, -78 deg C; 2.) -50 deg C, 2 h<br /> <br /> &nbsp;

<b>Multi-step reaction with 9 steps<br /> </b>1: PyH*OTs / CH₂Cl₂ / 24 h / 25 &deg;C<br />2: NaBH₄ / methanol / 1 h / 25 &deg;C<br />3: 97 percent / pyridine<br />4: 88 percent / dimethylformamide / 1 h / 0 &deg;C<br />5: 90 percent / mCPBA<br />6: PyH*OTs / ethanol / 6 h / 60 &deg;C<br />7: 95 percent / mCPBA / CH₂Cl₂ / 1 h / 25 &deg;C<br />8: 96 percent / PyH*OTs / CH₂Cl₂ / 24 h / 25 &deg;C<br />9: 1.) n-BuLi / 1.) THF, -78 deg C; 2.) -50 deg C, 2 h<br /> <br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1209227', constants.ctx, '0')">n-butyllithium</a> <br />&nbsp;1.) THF, -78 deg C; 2.) -50 deg C, 2 h;&nbsp;&nbsp;Multistep reaction;&nbsp;<br /> &nbsp;