1: dimethylsulfide borane complex / dichloromethane / 2 h / 0 °C / |Inert atmosphere 2: toluene / 1 h / 20 °C / |Schlenk technique; |Inert atmosphere 3: toluene; o-di-fluorobenzene / 16 h / 140 °C / |Inert atmosphere 4: potassium hydrogen difluoride / toluene; methanol; water / 2 h / 0 - 20 °C / |Schlenk technique; |Sealed tube; |Cooling; |Inert atmosphere 5: potassium carbonate; tetrakis(triphenylphosphine) palladium(0) / toluene; water; ethanol / 80 °C / |Inert atmosphere; |Sonication; |Reflux View Scheme