lithium aluminium tetrahydride in diethyl ether 0.0833333 h; Ambient temperatureultrasound;

1.1: hydrogenchloride / methanol; water; tetrahydrofuran / 18 h / |Reflux; |Inert atmosphere 1.2: 48 h / 20 °C 2.1: pyridinium chlorochromate; aluminum oxide / dichloromethane / 4 h / 20 °C 3.1: toluene; pentane / 4 h / 0 - 20 °C 4.1: lithium; ammonia / tetrahydrofuran; tert-butyl alcohol / 2 h / -40 °C 5.1: hydrogenchloride / methanol; water / 3 h / 0 °C / |Reflux View Scheme