反应详情

In a round bottomed flask were placed ethyl 2-chloro-4-(4-chlorophenyl)-3-oxobutanoate (84.4 mg, 0.3069 mmol), isopropyl alcohol (5 mL), and morpholine-4-carboselenoamide (80.0 mg, 0.414 mmol). The resulting mixture was brought to reflux under an atmosphere of nitrogen (all solids dissolved to give a clear pale pink solution). After ˜1 hour reflux, TLC analysis indicated that all starting materials had been consumed with the production of one major product. The reaction was allowed to cool to room temperature and stir overnight. The solvent was removed on the rotovap then the residue was dissolved in minimal dichloromethane and purified by column chromatography on silica gel (gradient 100% hexane to 35% ethyl acetate) to afford 35 mg (28% yield) product as a white solid. LC/MS (FA) ES+ 413/415/417. 1H NMR (400 MHz, DMSO) δ 7.37-7.23 (m, 4H), 4.25-4.14 (m, 4H), 3.72-3.62 (t, J=4.9 Hz, 4H), 3.50-3.41 (t, J=4.8 Hz, 4H), 1.27-1.20 (t, J=7.1 Hz, 3H).

1. customIn a round bottomed flask were placed
2. temperatureto reflux under an atmosphere of nitrogen (all solids
3. dissolutiondissolved
4. customto give a clear pale pink solution)
5. temperatureAfter ˜1 hour reflux
6. customhad been consumed with the production of one major product
7. customThe solvent was removed on the rotovap
8. dissolutionthe residue was dissolved in minimal dichloromethane
9. custompurified by column chromatography on silica gel (gradient 100% hexane to 35% ethyl acetate)