potassium carbonate in methanol; diethyl ether T=20°C; 1 h;

1: CuI; diethylamine / PdCl2(PPh3)2 / 25 °C 2: potassium carbonate / methanol / 25 °C View Scheme

copper(l) iodide; Pd2(PPh3)2Cl2; diethylamine T=20°C; Inert atmosphere;

1: aq. K2CO3 / methanol / 24 h / 50 °C 2: CuI; Et3N / PdCl2(PPh3)2 / tetrahydrofuran / 1 h / 20 °C 3: TBAF / tetrahydrofuran / 0 - 20 °C View Scheme

1: calcium carbonate / chloroform; methanol / 3 h / 20 °C 2: bis-triphenylphosphine-palladium(II) chloride; N-ethyl-N,N-diisopropylamine; bis(trimethylsilyl)-acetylene / tetrahydrofuran; ethyl acetate / 6.5 h / 20 - 50 °C / |Inert atmosphere 3: potassium carbonate / methanol; diethyl ether / 1 h / 20 °C View Scheme

tris(p-fluoro phenyl)phosphine; [RhCl(η2:η2-cycloocta-1,5-diene)]2 in N,N-dimethyl-formamide T=85°C; 2 h;

in acetonitrile T=150°C; 12 h;