1: TiCl4 / CH2Cl2 / -40 °C 2: PCC / tetrahydrofuran 3: 95 percent / H(1+) / dioxane 4: 95 percent / LiAlH4 View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: 95 percent / NaH / tetrahydrofuran<br />2: 95 percent / p-TsOH / CH₂Cl₂ <br /> <br /> &nbsp;