Anhydrous tripotassium phosphate (848 mg, 4.0 mmol) is added to a stirred solution of 6-hydroxy-N-[3-(4-methyl-1H-imidazol-1-yl)-5-(trifluoromethyl)phenyl]-1-naphthalenecarboxamide (411 mg, 1.0 mmol) in toluene (40 mL) under an argon atmosphere at 110° C. N-(6-Chloro-4-pyrimidinyl)-acetamide (252 mg, 1.5 mmol) is added and the mixture is stirred at 110° C. for a further 50 hours. The solvent is evaporated off under reduced pressure and the residue is washed with a saturated aqueous solution of NH4Cl and dried. The crude product is purified by recrystallisation from methanol to afford the title compound as a beige solid, m.p.: 291-293° C.
