1.1: potassium carbonate / acetone / 22 h / |Reflux 2.1: N-bromosuccinmide; dibenzoyl peroxide / tetrachloromethane / 24 h / |Reflux 3.1: sodium hydroxide / water / 24 h / 20 °C 4.1: potassium carbonate / acetone / 20 h / 20 °C 5.1: N-bromosuccinmide; dibenzoyl peroxide / tetrachloromethane / 24 h / |Reflux 5.2: 24 h / |Reflux View Scheme