1: 2,2',6,6'-tetrabromo-1,1'-biphenyl With n-butyllithium in tetrahydrofuran; hexane T=-75°C; 2: With sodium hydroxide; fluorodimethoxyborane*Et2O; dihydrogen peroxide in tetrahydrofuran; hexane T=-75 - 25°C; 3: methyl iodide With potassium hydroxide in dimethyl sulfoxide 1 h; Further stages.;

potassium hydroxide in dimethyl sulfoxide 1 h;

1: With n-butyllithium in tetrahydrofuran; hexane T=-75°C; 2: With methanol in tetrahydrofuran; hexane