1: 2,6-Dibromopyridine With n-butyllithium in tetrahydrofuran T=-78°C; 2: With tri-isopropoxy-borane in tetrahydrofuran T=-78 - 20°C; 3: 2,3-dimethylbutane-2,3-diol With acetic acid in tetrahydrofuran

{PdCl2[(t-Bu)2PCl]2}; cesium fluoride in propan-1-ol T=90°C; Suzuki-Miyaura coupling; 18 h; Inert atmosphere; chemoselective reaction;

potassium phosphate; tetrakis(triphenylphosphine) palladium(0) in water; N,N-dimethyl-formamide T=85°C; Suzuki cross-coupling;