To a stirred solution of 4-iodo-5-chloro-2-methoxy benzoic acid of Example 5, Step A (3.38 g, 10.8 mmol) in N,N-dimethylformamide (80 mL) was added 2-chloro phenyl boronic acid (5.07 g, 32.4 mmol) and potassium carbonate (3.44 g, 32.4 mmol). This mixture was purged with nitrogen and then treated with tetrakis(triphenylphosphine) palladium(0) (0.625 g, 0.54 mmol). The reaction was heated to reflux overnight, cooled, acidified with 2 N hydrochloric acid and extracted with ethyl acetate. The organic layer was washed with brine, dried over anhydrous magnesium sulfate, filtered, and evaporated to provide 2.4 g of the title acid which was used in the next step without further purification.
