1: hydrogenchloride / 1,4-dioxane / 7 h / |Inert atmosphere; |Reflux; |Darkness 2: potassium tert-butylate / tert-butyl alcohol / 0.5 h / 80 °C 3: N-bromosuccinmide; sulfuric acid / water; tetrahydrofuran / 48 h / 20 °C 4: cerium(III) chloride / water; ethanol / 20 h / 20 °C View Scheme

1: hydrogenchloride / 1,4-dioxane / 7 h / |Inert atmosphere; |Reflux; |Darkness 2: potassium tert-butylate / tert-butyl alcohol / 0.5 h / 80 °C 3: hydrogenchloride; trichloroisocyanuric acid / 48 h / 0 - 20 °C View Scheme

1: hydrogenchloride / 1,4-dioxane / 7 h / |Inert atmosphere; |Reflux; |Darkness 2: potassium tert-butylate / tert-butyl alcohol / 0.5 h / 80 °C 3: N-bromosuccinmide; sulfuric acid / water; tetrahydrofuran / 48 h / 20 °C View Scheme

1: hydrogenchloride / 1,4-dioxane / 7 h / |Inert atmosphere; |Reflux; |Darkness 2: potassium tert-butylate / tert-butyl alcohol / 0.5 h / 80 °C View Scheme