1: 95 percent / Bu4NF / tetrahydrofuran / 4.5 h / Ambient temperature 2: 98 percent / aq. HCl / methanol / 2 h / Ambient temperature 3: 95 percent / NaBH4, MeOH / 2 h / 0 - 5 °C View Scheme

1: 95 percent / Bu4NF / tetrahydrofuran / 4.5 h / Ambient temperature 2: 98 percent / aq. HCl / methanol / 2 h / Ambient temperature View Scheme

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1416879', constants.ctx, '0')">Martin's sulfurane</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1696894', constants.ctx, '0')">diethyl ether</a> <br />2&nbsp;h;&nbsp;&nbsp;Ambient temperature;&nbsp;<br /> &nbsp;

<b>Multi-step reaction with 3 steps<br /> </b>1: 98 percent / imidazole / dimethylformamide / Ambient temperature<br />2: 1.) LDA, potassium 1,1-dimethylpropoxide, 2.) B(OMe)3, 3.) 30percent aq. H₂O₂ <br />3: 80 percent / &lt;C₆H₅c(CF₃)2O&gt;2S(C₆H₅)2 / diethyl ether / 2 h / Ambient temperature<br /> <br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: 1.) LDA, potassium 1,1-dimethylpropoxide, 2.) B(OMe)3, 3.) 30percent aq. H₂O₂ <br />2: 80 percent / &lt;C₆H₅c(CF₃)2O&gt;2S(C₆H₅)2 / diethyl ether / 2 h / Ambient temperature<br /> <br /> &nbsp;

<b>Multi-step reaction with 4 steps<br /> </b>1: 94 percent / p-TsOH / benzene / 13 h / Heating<br />2: 98 percent / imidazole / dimethylformamide / Ambient temperature<br />3: 1.) LDA, potassium 1,1-dimethylpropoxide, 2.) B(OMe)3, 3.) 30percent aq. H₂O₂ <br />4: 80 percent / &lt;C₆H₅c(CF₃)2O&gt;2S(C₆H₅)2 / diethyl ether / 2 h / Ambient temperature<br /> <br /> &nbsp;