反应详情

Sodium acetate (0.19 g, 2.29 mmol) and ethoxyamine hydrochloride (0.22 g, 2.29 mmol) were added to a solution of 2-propionyl-3-hydroxy-5-(3-methylsulphonamido-2,4,6-trimethylphenyl)cyclohex-2-en-1-one (0.58 g, 1.53 mmol) in ethanol (25 ml) and methylene chloride (25 ml). Stirring was continued at 20° for 18 hrs. The solvent was removed under reduced pressure and the residue partitioned between chloroform and water. The organic layer was washed with water, dried over anhydrous magnesium sulfate and concentrated under reduced pressure to yield2-[1-(ethoxyimino)propyl]-hydroxy-5-[3-(methylsulphonamido)-2,4,6-trimethylphenyl]cyclohex-2-en-1-one as a brown oil (0.27 g, 42%). The compound was characterized by proton magnetic resonance spectroscopy. The spectroscopic data are recorded in Table 2.

1. customThe solvent was removed under reduced pressure
2. customthe residue partitioned between chloroform and water
3. washThe organic layer was washed with water
4. dry with materialdried over anhydrous magnesium sulfate
5. concentrationconcentrated under reduced pressure to yield2-[1-(ethoxyimino)propyl]-hydroxy-5-[3-(methylsulphonamido)-2,4,6-trimethylphenyl]cyclohex-2-en-1-one as a brown oil (0.27 g, 42%)