1: With copper(l) iodide; bis-triphenylphosphine-palladium(II) chloride in 1,4-dioxane 0.0833333 h; Inert atmosphere; 2: With triethylamine in 1,4-dioxane T=500°C; 18 h;

1: furolt;3,2-bgt;pyridine With n-butyllithium in tetrahydrofuran T=-78°C; 1 h; 2: chloro-trimethyl-silane in tetrahydrofuran T=-78°C; 1 h; Further stages.;

bis-triphenylphosphine-palladium(II) chloride; copper(l) iodide; triethylamine T=120°C; 24 h;

1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 4 h / 20 °C 2: trichlorophosphate / 2 h / 100 °C / Sealed tube 3: potassium fluoride; N-iodo-succinimide / acetonitrile / 2 h / 20 - 50 °C / Inert atmosphere View Scheme