hydrogenchloride; water Inert atmosphere;

1: hydrogenchloride / water / 20 °C / |Inert atmosphere; |Schlenk technique 2: tetrakis(triphenylphosphine) palladium(0); sodium carbonate / water; toluene; ethanol / 20 h / |Inert atmosphere; |Schlenk technique; |Reflux View Scheme

 in  tetrahydrofuran T=-30 - 20°C;  Inert atmosphere;