1: 4-bromo-aniline With hydrogenchloride in water T=0 - 5°C; 2: With sodium tetrafluoroborate; sodium nitrite in water T=5°C; 0.166667 h; 3: diphenyldimethoxysilane With methanol; palladium diacetate T=25°C; Hiyama coupling; 6 h; chemoselective reaction;