1: 2,2’-dibromo-9,9’-dimethyl-fluorene With n-butyllithium in diethyl ether; hexane T=-78 - 20°C; 2: tri-isopropoxy-borane in diethyl ether; hexane T=-78 - 20°C; 3: water in diethyl ether; hexane

1: 2,2’-dibromo-9,9’-dimethyl-fluorene With n-butyllithium in tetrahydrofuran; hexane T=-78°C; 1 h; Inert atmosphere; 2: boric acid trimethyl ester in tetrahydrofuran; hexane 12 h; 3: With hydrogenchloride in tetrahydrofuran; hexane; water

1: boric acid trimethyl ester; 2,2’-dibromo-9,9’-dimethyl-fluorene With n-butyllithium in tetrahydrofuran; hexane T=-78°C; 2: hydrogenchloride in tetrahydrofuran; hexane

potassium carbonate; tetrakis(triphenylphosphine) palladium(0) in tetrahydrofuran; water T=80°C; 5 h;