反应详情

Methanol (10 ml), THF (10 ml) and hydrazine monohydrate (1.68 g, 0.03 mol) were added to methyl 2-(2,5-dimethylphenoxymethyl)-α-methoxyiminophenylacetate (3.27 g, 0.01 mol), and the mixture was stirred at room temperature for 3 hours. After completion of the reaction, water (200 ml) was added, and the mixture was extracted with dichloromethane. The dichloromethane layer was dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was recrystallized from ethyl acetate/n-hexane to give 2-(2,5-dimethylphenoxymethyl)-α-methoxyiminophenylacetohydrazide (2.93 g, 89.6%) as colorless cristals.

1. additionwas added
2. extractionthe mixture was extracted with dichloromethane
3. dry with materialThe dichloromethane layer was dried over anhydrous magnesium sulfate
4. concentrationconcentrated under reduced pressure
5. customThe residue was recrystallized from ethyl acetate/n-hexane