1: With n-butyllithium in tetrahydrofuran; hexane T=-70 - -65°C; 6 h; 2: With tri-isopropoxy-borane in tetrahydrofuran; hexane T=-70 - 20°C; 1 h; 3: With hydrogenchloride in tetrahydrofuran; hexane; water pH=3;

1: 2,2’-dibromo-9,9’-dimethyl-fluorene With n-butyllithium in tetrahydrofuran; hexane T=-70 - -65°C; 6 h; Inert atmosphere; 2: tri-isopropoxy-borane in tetrahydrofuran; hexane T=-70 - 20°C; 3: With hydrogenchloride in tetrahydrofuran; hexane; water pH=3;

1: With sodium carbonate; tetrakis(triphenylphosphine) palladium(0) in water; toluene 2: in water; toluene 8 h; Heating / reflux;

1: With n-butyllithium in tetrahydrofuran; hexane T=-70 - -65°C; 6 h; 2: With tri-isopropoxy-borane in tetrahydrofuran; hexane T=-70 - 20°C; 1 h; 3: With hydrogenchloride in tetrahydrofuran; hexane; water pH=3;

1: 2,2’-dibromo-9,9’-dimethyl-fluorene With n-butyllithium in tetrahydrofuran; hexane T=-70 - -65°C; 6 h; Inert atmosphere; 2: tri-isopropoxy-borane in tetrahydrofuran; hexane T=-70 - 20°C; 3: With hydrogenchloride in tetrahydrofuran; hexane; water pH=3;