反应详情

A solution of 1.51 g of N-chloroacetyl-N-(2-methoxybenzyl)-2-phenoxyaniline synthesized in the same manner as in Example 1 and 770 mg of sodium azide in 10 ml of dimethylformamide was stirred at room temperature overnight. The reaction mixture was poured into water and extracted with ethyl acetate. The extract was washed with 5% hydrochloric acid, a saturated aqueous sodium bicarbonate solution and a saturated aqueous sodium chloride solution, successively, and dried over anhydrous sodium sulfate. After removal of the drying agent by filtration, the solvent was concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (eluent; ethyl acetate−hexane=1:4) to give 1.55 g of N-azidoacetyl-N-(2-methoxybenzyl)-2-phenoxyaniline as an oil.

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