反应详情

A solution of N-methyl-2-(2-phenoxyphenyl)-2-oxoacetamide (1.50 g) and hydroxylamine hydrochloride (0.69 g) in methanol (10 ml) was refluxed for 220 minutes while stirring, and water (75 ml) was added to the reaction mixture, followed by extraction with dichloromethane twice (150 ml and 100 ml). The organic layer was washed with water (75 ml) and dried over anhydrous sodium sulfate. Upon filtration, the filtrate was concentrated under reduced pressure to give a crystalline residue. The residue was combined with dimethylformamide (DMF) (7 ml), potassium carbonate (1.6 g) and dimethyl sulfate (0.58 ml) and stirred overnight. The reaction mixture was treated in the same manner as in Example 2 to give 0.80 g of the objective compound as an isomeric product.

1. extractionfollowed by extraction with dichloromethane twice (150 ml and 100 ml)
2. washThe organic layer was washed with water (75 ml)
3. dry with materialdried over anhydrous sodium sulfate
4. filtrationUpon filtration
5. concentrationthe filtrate was concentrated under reduced pressure
6. customto give a crystalline residue
7. stirringstirred overnight
8. additionThe reaction mixture was treated in the same manner as in Example 2