1.1: N-bromosuccinmide; anhydrous lithium acetate / water; acetonitrile / 4 h / Microwave irradiation 1.2: silica gel / 6.5 h / Reflux 2.1: bis(trimethylsilyl)-peroxide; trimethylsilyl trifluoromethanesulfonate / dichloromethane / -40 - -10 °C 3.1: potassium carbonate / acetone / 11 h / Reflux 4.1: tetrakis(triphenylphosphine) palladium(0); sodium carbonate / ethanol; water; benzene / 4 h / Reflux View Scheme