iodine cloride; acetic acid in water T=20 - 55°C; 2 h; Inert atmosphere;

1: triethylamine / dichloromethane / 12 h / 20 °C / |Inert atmosphere 2: tetrakis(triphenylphosphine) palladium(0); sodium carbonate / water; ethanol; ethylene glycol dimethyl ether / 1 h / 95 °C / |Inert atmosphere 3: trifluoroacetic acid / dichloromethane / 4 h / 20 °C / |Inert atmosphere View Scheme

triethylamine in dichloromethane T=20°C; 12 h; Inert atmosphere;