1: sodium hydrogencarbonate / ethylene glycol dimethyl ether; water / 1 h / 20 °C 2: water / 72 h / 40 °C 3: palladium on carbon; hydrogen bromide; hydrogen / ethanol; water / 40 h / 40 °C / 836.06 Torr 4: hydrogenchloride; water / 30 h / Reflux View Scheme

1: sodium hydrogencarbonate / ethylene glycol dimethyl ether; water / 1 h / 20 °C 2: water / 120 h / 40 °C 3: palladium on carbon; sulfuric acid; hydrogen / ethanol; water / 48 h / 50 °C / 836.06 Torr 4: hydrogenchloride; water / 30 h / Reflux View Scheme