1: silver trifluoromethanesulfonate / dichloromethane / 0.5 h / 20 °C / |Inert atmosphere 2: silver trifluoromethanesulfonate; copper(II) bis(trifluoromethanesulfonate) / N,N-dimethyl-formamide; 1,2-dichloro-ethane / 24 h / 120 °C / |Inert atmosphere View Scheme