1: sodium tetrahydroborate / methanol / 60 °C / |Inert atmosphere 2: triethylamine / methanol / 8 h / 30 °C / |Inert atmosphere View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: hydrogenchloride / water / 3.5 h / 80 &deg;C / |Sealed tube; |Inert atmosphere<br />2: thionyl chloride / 40 &deg;C / |Inert atmosphere<br /> <br /> &nbsp;