反应详情

85% Potassium hydroxide (6.12 g, 92.8 mmol) and tert-butyl alcohol (15 ml) were added to 2-(2,5-dimethylphenoxymethyl)-α-hydroxyiminobenzyl cyanide(E/Z=15/85)(1.30 g, 4.64 mmol). The mixture was heated under reflux for 5 hours. After completion of the reaction, the reaction mixture was neutralized with 6N hydrochloric acid, and water (100 ml) was added. The resulting mixture was extracted with ether (100 ml), dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The resulting crystals were recrystallized from n-hexane/ethyl acetate to give 2-[2-(2,5dimethylphenoxymethyl)phenyl]-2-hydroxyiminoacetamide (0.83 g, Yield: 60.0%, Z=at least 98%) as colorless crystals.

1. temperatureThe mixture was heated
2. temperatureunder reflux for 5 hours
3. customAfter completion of the reaction
4. additionwas added
5. extractionThe resulting mixture was extracted with ether (100 ml)
6. dry with materialdried over anhydrous magnesium sulfate
7. concentrationconcentrated under reduced pressure
8. customThe resulting crystals were recrystallized from n-hexane/ethyl acetate