sodium tetrahydroborate; dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II) dichloromethane adduct; N,N,N',N,-tetramethylethylenediamine in tetrahydrofuran T=20°C; 6 h; Inert atmosphere; regioselective reaction;

1: N,N,N',N,-tetramethylethylenediamine; sodium tetrahydroborate; dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II) dichloromethane adduct / tetrahydrofuran / 6 h / 20 °C / |Inert atmosphere 2: N-bromosuccinmide / tetrahydrofuran / 4 h / -78 °C / |Inert atmosphere 3: palladium diacetate; triphenylphosphine; N,N,N',N,-tetramethylethylenediamine; sodium tetrahydroborate / tetrahydrofuran / 18 h / 20 °C / |Inert atmosphere View Scheme