A solution of 5-[1-(4-Chloro-2-trifluoromethyl-benzyl)-1H-indazol-5-ylmethylene]-2-[1,4]diazepan-1-yl-thiazol-4-one (0.051 g, 0.098 mmol) in DMSO (2.2 mL) was treated with potassium carbonate (0.045 g, 0.32 mmol) and methanesulfonic acid 2,2,2-trifluoro-ethyl ester (0.06 g, 0.32 mmol). Reaction mixture was stirred at 70° C. for 1 hour and partitioned between dichloromethane and water. The dichloromethane layer was dried over Na2SO4, filtered, and the solvent evaporated in vacuo to yield a crude solid. The crude solid was purified using semi-preparative reverse phase HPLC (YMC ODS A, 100×30 mm, 50 μM I.D., 0.05% TFA acetonitrile/0.05% TFA water=30/70 to 100/0) to yield the title compound as a flocculent solid.
