sodium hydroxide in ethanol Ambient temperature;

lithium aluminium tetrahydride in tetrahydrofuran 2 h; Heating;

<b>Multi-step reaction with 6 steps<br /> </b>1: AcOH / ethanol / 18 h / Heating<br />2: NaBH₄ / methanol / 1 h / Ambient temperature<br />3: 78 percent / acetic anhydride / 1 h / 70 &deg;C<br />4: 86 percent / NaIO₄ / H₂O; methanol / 16 h / Ambient temperature<br />5: 1.) TFAA, 2.) BF₃*Et₂O / 1.) benzene, RT, 1 h, 2.) benzene, RT, 2 h<br />6: 75 percent / NaBH₄, NiCl₂*6H₂O / methanol; tetrahydrofuran / 0.5 h / Ambient temperature<br /> <br /> &nbsp;