bis-triphenylphosphine-palladium(II) chloride; copper(l) iodide; diethylamine in N,N-dimethyl-formamide T=50°C; Inert atmosphere;

1: diisopropylamine; CuI; tri(tert-butyl)phosphonium tetrafluoroborate / PdCl2(MeCN)2 / tetrahydrofuran / 24 h / 20 °C 2: 973 mg / hydrazine monohydrate; FeCl3*6H2O; activated carbon / methanol / Heating View Scheme

Li2CuCl4 in tetrahydrofuran 1.5 h; Heating;