1: With 9-borabicyclo[3.3.1]nonane dimer in tetrahydrofuran T=20°C; intramolecular Suzuki coupling reaction; 11 h; 2: With sodium hydroxide; (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride in tetrahydrofuran 23 h; Heating;