1: 5-bromo-2-isopropoxy-pyridine With n-butyllithium in diethyl ether; hexane T=-78°C; 2 h; 2: tri-isopropoxy-borane in diethyl ether; hexane T=-78 - 20°C; 2 h; 3: With water in diethyl ether; hexane T=20°C;

1: With n-butyllithium in diethyl ether; hexane T=-78°C; 2 h; Inert atmosphere; 2: With tri-isopropoxy-borane in diethyl ether; hexane T=-78°C; 2 h; Inert atmosphere;