1.1: hydrogenchloride / ethyl acetate; water / 0.25 h / 20 °C 2.1: thionyl chloride / toluene / 4 h / 90 °C 3.1: triethylamine / dichloromethane / 1 h / 20 °C / Cooling with ice 4.1: hydrogen / 5 palladium on charcoal / methanol / 16 h / 20 °C / 3375.34 Torr / Inert atmosphere 5.1: sodium bis(2-methoxyethoxy)aluminium dihydride / toluene / 1 h / Inert atmosphere; Reflux 5.2: 0.5 h / 20 °C / Cooling with ice View Scheme