1: 96 percent / H2O/KOH / ethanol / 16 h / Ambient temperature 2: 90 percent / diethyl ether; hexane / 2 h / Heating 3: 77 percent / m-chloroperbenzoic acid / CH2Cl2 / 72 h / Ambient temperature 4: 93 percent / NaOMe / methanol / 2 h / Heating 5: 81 percent / SF4 / 24 h / Ambient temperature View Scheme

1: 96 percent / H2O/KOH / ethanol / 16 h / Ambient temperature 2: thionyl chloride View Scheme