1.1: pyridinium p-toluenesulfonate / methanol / 96 h / 20 °C 2.1: Jone's reagent / isopropyl alcohol; acetone / 2 h / 20 °C 3.1: diethyl ether; ethyl acetate / 2 h / 0 °C 4.1: platinum(IV) oxide; hydrogen; palladium / ethanol / 48 h / 2625.26 Torr 5.1: potassium hydroxide / water / 96 h / 20 °C / Darkness 5.2: 3 h / 0 °C / pH 6 - 7 View Scheme