1: triethylammonium formate / palladium diacetate; 1,1'-bis-(diphenylphosphino)ferrocene / N,N-dimethyl-formamide / 8 h / 50 °C / Inert atmosphere 2: triphenylphosphine / tetrahydrofuran View Scheme

1: triethylammonium formate; 1,1'-bis(diphenylphosphino)ferrocene / palladium diacetate / N,N-dimethyl-formamide / 8 h / 50 °C / Inert atmosphere 2: triphenylphosphine / tetrahydrofuran / 20 °C View Scheme