pyridine; nitrogen; triphenylphosphine; dichloro bis(triphenylphosphine)palladium (II) in water

dichloro bis(acetonitrile) palladium(II); caesium carbonate; 2-(dicyclohexylphosphino)-2',4',6'-tri-i-propyl-1,1’-biphenyl in various solvent(s) Sonogashira coupling; 2 h; Heating;

1H-imidazole; triethylamine; sodium iodide; zinc(II) chloride; tetrakis(triphenylphosphine) palladium(0) in N,N-dimethyl-formamide T=60°C; 16 h;