Cs2CO3 (879.9 mg, 2.7 mmol) was added to a solution of 2-fluoro-N-(2-oxo-1,2-dihydropyridin-4-yl)-5-chlorobenzamide (72.0 mg, 0.27 mmol) and 4-fluoro-3-methoxyphenol (307.7 μl, 2.7 mmol) in DMF (1 mL) and the reaction was stirred at 100° C. for 1 hour. The reaction was filtered and purified by reverse phase HPLC using a gradient of acetonitrile in water (10-99%) and HCl as a modifier to yield 5-chloro-2-(4-fluoro-2-methoxyphenoxy)-N-(2-oxo-1,2-dihydropyridin-4-yl)benzamide (70) (31.8 mg, 30%). ESI-MS m/z calc. 388.06. found 389.10 (M+1)+; Retention time: 1.52 minutes (3 minutes run).
