To a sealed tube were added 2-bromo-4-iodopyridine 203-1 (568 mg, 2.0 mmol), ethyl 2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)acetate 203-2 (580 mg, 2.0 mmol), Pd(PPh3)4 (116 mg, 0.1 mmol), Na2CO3 (636 mg, 6.0 mmol), toluene (4 mL), H2O (4 mL) and ethanol (1 mL). The reaction mixture was bubbled with nitrogen for 2 minutes and stirred at 80° C. for 10 hours. After cooling to room temperature, the solvents were evaporated and the residue was redissolved in water (5 ml) and extracted with ethyl acetate (5 mL×3). The combined organic phases were dried over Na2SO4, and concentrated. The residue was purified by silica gel flash chromatography and eluted with 15% ethyl acetate in hexane to give ethyl 2-(4-(2-bromopyridin-4-yl)phenyl)acetate 203-3. MS m/z 320.1 (M+1).
