1: 4-bromo-1,1'-biphenyl With n-butyllithium in tetrahydrofuran; hexane T=-78°C; 0.25 h; 2: With zinc(II) chloride−TMEDA in tetrahydrofuran; hexane T=-78 - 20°C; 2.67 h; 3: 2,4-bis(4-biphenylyl)-6-(4-bromophenyl)-1,3,5-triazine With tetrakis(triphenylphosphine) palladium(0) in tetrahydrofuran; hexane 2 h; Heating / reflux;