1: 3-bromo-5-isopropoxypyridine With n-butyllithium in toluene T=-78 - -50°C; 0.5 h; 2: tri-isopropoxy-borane in tetrahydrofuran; toluene T=-78 - -15°C; 0.25 h; 3: With hydrogenchloride; sodium hydroxide; water more than 3 stages;