反应详情

温度

50 °C

2-Ethyl-4-(1,1,1,2,3,3,3-heptafluoropropan-2-yl)-6-methylaniline (1.7 g) and pyridine (0.88 g) were dissolved in tetrahydrofuran (30 ml). To the solution, the crude product of 4-cyano-3-methylbenzoyl chloride (1.0 g) and 4-dimethylaminopyridine (0.03 g) were added and the mixture was stirred under heating at 50° C. for 2 hours. After adjusting to room temperature, the reaction solution was diluted with water and extracted twice with ethyl acetate. The organic phases were combined, washed with 2N hydrochloric acid and dried over magnesium sulfate. After filtering off the drying agent, the solvent was distilled off under reduced pressure to obtain a crude product. The crude product was washed with a mixed solvent of hexane and ethyl acetate (ethyl acetate 10%) to obtain 4-cyano-N-[2-ethyl-4-(1,1,1,2,3,3,3-heptafluoropropan-2-yl)-6-methylphenyl]-3-methylbenzamide (2.1 g, yield 83%).

1. customAfter adjusting to room temperature
2. extractionextracted twice with ethyl acetate
3. washwashed with 2N hydrochloric acid
4. dry with materialdried over magnesium sulfate
5. filtrationAfter filtering off the drying agent
6. distillationthe solvent was distilled off under reduced pressure
7. customto obtain a crude product
8. washThe crude product was washed with a mixed solvent of hexane and ethyl acetate (ethyl acetate 10%)