反应详情

A mixture of 4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxyamine (1.00 g), ethyl benzoylacetate (0.612 ml), acetic acid (0.554 ml), sodium acetate (528 mg) and ethanol (20 ml) was heated to reflux for 12 hours and cooled to room temperature. Water was added to the reaction mixture and extracted with ethyl acetate. The ethyl acetate layer was washed with an aqueous saturated solution of sodium chloride, dried (MgSO4) and concentrated. The residue was subjected to silica gel chromatography to obtain ethyl E-3-[4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxyimino]-3-phenylpropionate (1.29 g, yield 83%) as a colorless oil from an ethyl acetate-hexane (1:3, v/v).

1. temperaturewas heated
2. temperatureto reflux for 12 hours
3. extractionextracted with ethyl acetate
4. washThe ethyl acetate layer was washed with an aqueous saturated solution of sodium chloride
5. dry with materialdried (MgSO4)
6. concentrationconcentrated