1: potassium tert-butylate / tetrahydrofuran / 1 h / 20 °C / |Inert atmosphere 2: Stock catalyst / dichloromethane / 3 h / 0 - 20 °C / |Inert atmosphere View Scheme

lithium chloride; palladium diacetate in acetic acid T=20°C; 18 h;

lithium chloride; palladium diacetate in acetic acid T=20°C; 4 h;