sodium tetrahydroborate; iodine in tetrahydrofuran T=20°C; Reduction;

<b>Multi-step reaction with 2 steps<br /> </b>1: 98 percent / pyridine / CH₂Cl₂ / 3 h / Ambient temperature<br />2: 94 percent / triethylamine / tetrahydrofuran / 2 h / Ambient temperature<br /> <br /> &nbsp;