1: NaBH4 / methanol / 0.5 h / -78 °C 2: NaOH / methanol / 12 h / 20 °C 3: 8.9 mg / H2 / Pd(OH)2/C / methanol / 24 h / 20 °C View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: Et₃N; 4-(dimethylamino)pyridine / 1,2-dichloro-ethane / 3 h / Heating<br />2: PdCl₂ / dioxane; H₂O / 3 h / 60 &deg;C<br /> <br /> &nbsp;