1: With pyridine; AlCl3, aluminium chloride in dichloromethane 24 h; Reflux; 2: With hydrogenchloride in dichloromethane; water

1.1: N-bromosuccinmide / tetrachloromethane / 30 h / |Reflux 2.1: acetic acid; water / 24 h / |Reflux 3.1: pyridinium chlorochromate / dichloromethane / 20 - 25 °C 4.1: AlCl3, aluminium chloride / dichloromethane / 20 °C / |Reflux 4.2: |Cooling with ice View Scheme

1.1: acetic acid; water / 24 h / |Reflux 2.1: pyridinium chlorochromate / dichloromethane / 20 - 25 °C 3.1: AlCl3, aluminium chloride / dichloromethane / 20 °C / |Reflux 3.2: |Cooling with ice View Scheme

1.1: N-bromosuccinmide; dibenzoyl peroxide / tetrachloromethane / 24 h / |Reflux 1.2: 24 h / |Reflux 2.1: AlCl3, aluminium chloride; pyridine / dichloromethane / 24 h / |Reflux View Scheme

1,4-dioxane; aluminium trichloride

manganese(IV) oxide

1: aqueous NaOH 2: MnO2 View Scheme