1.1: tetrahydrofuran / 1 h / 0 °C / |Inert atmosphere 2.1: magnesium; iodine / tetrahydrofuran / 20 - 50 °C / |Inert atmosphere 2.2: 1 h / 0 °C / |Inert atmosphere 3.1: triethylamine; acetic acid / |Inert atmosphere 4.1: sodium methylate / methanol 5.1: |Acidic conditions 6.1: perchloric acid / -10 °C / |Inert atmosphere 6.2: 2 h / -30 - -20 °C / |Inert atmosphere View Scheme

1.1: 1,1,1,3,3,3-hexafluoro-2-propanone; dihydrogen peroxide; disodium hydrogen phosphate dodecahydrate / water; dichloromethane / |Inert atmosphere 2.1: magnesium; iodine / tetrahydrofuran / 20 - 50 °C / |Inert atmosphere 2.2: 1 h / 0 °C / |Inert atmosphere 3.1: triethylamine; acetic acid / |Inert atmosphere 4.1: sodium methylate / methanol 5.1: |Acidic conditions 6.1: perchloric acid / -10 °C / |Inert atmosphere 6.2: 2 h / -30 - -20 °C / |Inert atmosphere View Scheme

1.1: tetrahydrofuran / 0 °C 2.1: 1,1,1,3,3,3-hexafluoro-2-propanone; dihydrogen peroxide; disodium hydrogen phosphate dodecahydrate / water; dichloromethane / |Inert atmosphere 3.1: magnesium; iodine / tetrahydrofuran / 20 - 50 °C / |Inert atmosphere 3.2: 1 h / 0 °C / |Inert atmosphere 4.1: triethylamine; acetic acid / |Inert atmosphere 5.1: sodium methylate / methanol 6.1: |Acidic conditions 7.1: perchloric acid / -10 °C / |Inert atmosphere 7.2: 2 h / -30 - -20 °C / |Inert atmosphere View Scheme