反应详情

In 30 ml of tetrahydrofuran were dissolved 2.65 g of N-(2-isopropoxybenzyl)-2-phenoxyaniline and 1.5 ml of triethylamine, and then 0.8 ml of acetyl chloride was added dropwise to the solution with stirring, followed by stirring for 30 minutes. The reaction mixture was poured to water and extracted with ethyl acetate, and the extract was washed with 0.5 N hydrochloric acid, a saturated aqueous sodium bicarbonate solution and then with a saturated aqueous sodium chloride solution, successively, and dried over anhydrous sodium sulfate. After removal of the drying agent by filtration, the filtrate was concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (eluent; ethyl acetate−hexane=1:4) to give 2.92 g of N-acetyl-N-(2-isopropoxybenzyl)-2-phenoxyaniline as an oil.

1. stirringby stirring for 30 minutes
2. extractionextracted with ethyl acetate
3. washthe extract was washed with 0.5 N hydrochloric acid
4. dry with materiala saturated aqueous sodium bicarbonate solution and then with a saturated aqueous sodium chloride solution, successively, and dried over anhydrous sodium sulfate
5. customAfter removal of the drying agent
6. filtrationby filtration
7. concentrationthe filtrate was concentrated under reduced pressure
8. customthe residue was purified by silica gel column chromatography (eluent; ethyl acetate−hexane=1:4)