palladium diacetate in dichloromethane; acetonitrile T=25°C; 3 h;

PPh3 gold(I) chloro complex; silver trifluoromethanesulfonate in dichloromethane T=20°C; 18 h;

1: With AgNTf2 in dichloromethane T=20°C; Inert atmosphere; 2: With hydrogenchloride in dichloromethane; water T=20°C; 0.75 h; Inert atmosphere;