反应详情

温度

90 °C

To a solution of 4-chloro-2-fluoro-N-(2-oxo-1H-pyridin-4-yl)benzamide (500 mg, 1.87 mmol) in NMP (5 mL) was added 4-fluoro-2-methyl-phenol (709.5 mg, 5.62 mmol) and Cs2CO3 (1.83 g, 5.62 mmol) and the reaction mixture was stirred at 90° C. for 2 hours. The reaction mixture was poured into water and extracted with ethyl acetate (3×). The organics were combined, washed with 3N NaOH (3×), water, brine, dried (Na2SO4) and evaporated to dryness. Purification by silica gel column chromatography gave 4-chloro-2-(4-fluoro-2-methyl-phenoxy)-N-(2-oxo-1H-pyridin-4-yl)benzamide (13a) (300 mg, 43%) as a tan solid. ESI-MS m/z calc. 372.07, found 373.1 (M+1)+; Retention time: 1.5 minutes (3 minutes run). 1H NMR (400 MHz, DMSO-d6) δ 11.25 (s, 1H), 10.48 (s, 1H), 7.65 (d, J=8.2 Hz, 1H), 7.30 (dd, J=7.9, 1.6 Hz, 2H), 7.21 (d, J=8.7 Hz, 1H), 7.09 (d, J=5.5 Hz, 2H), 6.75 (dd, J=5.1, 1.8 Hz, 2H), 6.38 (dd, J=7.2, 2.0 Hz, 1H), 2.16 (s, 3H) ppm.

1. extractionextracted with ethyl acetate (3×)
2. washwashed with 3N NaOH (3×), water, brine
3. dry with materialdried (Na2SO4)
4. customevaporated to dryness
5. customPurification by silica gel column chromatography