反应详情

A mixture of methyl 3-benzoylpropionate (15.0 g), hydroxylamine hydrochloride (6.50 g), sodium acetate (9.60 g) and methanol (150 ml) was heated under reflux for 8 hours. The reaction mixture was concentrated, and the residue was diluted with water and extracted with ethyl acetate. The ethyl acetate layer was washed with water, dried (MgSO4), and then concentrated. The residue was subjected to column chromatography on silica gel, and methyl E-4-hydroxyimino-4-phenylbutyrate (14.7 g, yield 91%) was obtained as an oil from a fraction eluted with ethyl acetate-hexane (1:3, v/v).

1. temperaturewas heated
2. temperatureunder reflux for 8 hours
3. concentrationThe reaction mixture was concentrated
4. additionthe residue was diluted with water
5. extractionextracted with ethyl acetate
6. washThe ethyl acetate layer was washed with water
7. dry with materialdried (MgSO4)
8. concentrationconcentrated