hydrogen; platinum(IV) oxide in tetrahydrofuran P=1034.3 Torr;

<b>Multi-step reaction with 7 steps<br /> </b>1: 98 percent / KOH / ethanol; H₂O / 6 h / Heating<br />2: 95 percent / 170 &deg;C<br />3: thionyl chloride / 0.75 h / Heating<br />4: 85 percent / AlCl₃ / CS₂ / 3 h / Heating<br />5: 89 percent / NaBH₄ / ethanol; tetrahydrofuran<br />6: 96 percent / p-toluenesulfonic acid / benzene / Heating<br />7: 98 percent / NiCl₂&lt;dppp&gt;2 / diethyl ether / Heating<br /> <br /> &nbsp;

<b>Multi-step reaction with 11 steps<br /> </b>1: 91 percent / sulfuric acid / H₂O / 4 h / Heating<br />2: 84 percent / LiAlH₄ / diethyl ether / 1 h / Heating<br />3: 72 percent / 48percent HBr, H₂SO₄ / 3 h / Heating<br />4: 63 percent / NaOEt / 7 h / Heating<br />5: 98 percent / KOH / ethanol; H₂O / 6 h / Heating<br />6: 95 percent / 170 &deg;C<br />7: thionyl chloride / 0.75 h / Heating<br />8: 85 percent / AlCl₃ / CS₂ / 3 h / Heating<br />9: 89 percent / NaBH₄ / ethanol; tetrahydrofuran<br />10: 96 percent / p-toluenesulfonic acid / benzene / Heating<br />11: 98 percent / NiCl₂&lt;dppp&gt;2 / diethyl ether / Heating<br /> <br /> &nbsp;

<b>Multi-step reaction with 9 steps<br /> </b>1: 72 percent / 48percent HBr, H₂SO₄ / 3 h / Heating<br />2: 63 percent / NaOEt / 7 h / Heating<br />3: 98 percent / KOH / ethanol; H₂O / 6 h / Heating<br />4: 95 percent / 170 &deg;C<br />5: thionyl chloride / 0.75 h / Heating<br />6: 85 percent / AlCl₃ / CS₂ / 3 h / Heating<br />7: 89 percent / NaBH₄ / ethanol; tetrahydrofuran<br />8: 96 percent / p-toluenesulfonic acid / benzene / Heating<br />9: 98 percent / NiCl₂&lt;dppp&gt;2 / diethyl ether / Heating<br /> <br /> &nbsp;

<b>Multi-step reaction with 3 steps<br /> </b>1: 89 percent / NaBH₄ / ethanol; tetrahydrofuran<br />2: 96 percent / p-toluenesulfonic acid / benzene / Heating<br />3: 98 percent / NiCl₂&lt;dppp&gt;2 / diethyl ether / Heating<br /> <br /> &nbsp;