反应详情

温度

100 °C

To a solution of 2-chloro-4-fluoro-phenol (20.97 g, 143.10 mmol) and 2-fluoro-6-(trifluoromethyl)benzaldehyde (25 g, 130.1 mmol) in DMF (125.0 mL) was added Cs2CO3 (46.62 g, 143.1 mmol) and the reaction mixture was stirred at 100° C. for 1 hour. The reaction mixture was poured into water (500 ml) and extracted with ethyl acetate (3×150 ml). The organics were combined, washed with water, brine (2×), dried over Na2SO4, filtered and evaporated to give a red oil which solidified after standing over night. The material was then triturated with hot hexanes and cooled to 25° C. The slurry was filtered and washed with cold hexanes to give 2-(2-chloro-4-fluoro-phenoxy)-6-(trifluoromethyl)benzaldehyde (32.7 g, 79%) as an off white solid. 1H NMR (400 MHz, DMSO) δ 10.61 (s, 1H), 7.84-7.70 (m, 2H), 7.66 (d, J=7.9 Hz, 1H), 7.47 (dd, J=9.0, 5.3 Hz, 1H), 7.42-7.32 (m, 1H), 7.12 (d, J=8.3 Hz, 1H) ppm.

1. extractionextracted with ethyl acetate (3×150 ml)
2. washwashed with water, brine (2×)
3. dry with materialdried over Na2SO4
4. filtrationfiltered
5. customevaporated
6. customto give a red oil which
7. waitafter standing over night
8. customThe material was then triturated with hot hexanes
9. temperaturecooled to 25° C
10. filtrationThe slurry was filtered
11. washwashed with cold hexanes