1: pinacolbutylboronate With sec.-butyllithium in tetrahydrofuran; cyclohexane T=-78 - 20°C; Suzuki-Miyaura reaction; 1.5 h; 2: 4-acetylphenyl triflate With sodium acetate; (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride in tetrahydrofuran T=70 - 80°C;