1: 1,4-dibromo-2-fluorobenzene With pyridine; zinc dibromide in acetonitrile T=20°C; Electrochemical reaction4F/mol; 2: iodobenzene With bis-triphenylphosphine-palladium(II) chloride

magnesium 1.) Grignard reaction, 2.) dehydration, 3.) aromatisation; Multistep reaction;