1: 2-bromo-naphthalene With tert.-butyl lithium in pentane T=-78 - 20°C; 2: With indium(III) chloride in tetrahydrofuran; diethyl ether; pentane T=-78 - 20°C; 1 h; 3: 9,10-Dibromoanthracene With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride in tetrahydrofuran; diethyl ether; pentane T=70°C; 12 h; Further stages.;

sodium hypophosphite; acetic acid; potassium iodide

2: KI; NaH2PO2; glacial acetic acid View Scheme