反应详情

To 500 ml of toluene were added 6.2 g (0.022 mole) of 1-(3,4-dichlorophenyl)-N-phenylpropaneimine and 3.9 g (0.022 mole) of ethyl phenylpropiolate, followed by addition of 3.6 g (0.023 mole) of aluminum chloride. After heating the reaction mixture with stirring at 60°-70° C. for 4 days under a nitrogen atmosphere, the reaction mixture was poured into 400 ml of 2N sulfuric acid which had been ice-cooled, followed by extraction with dichloromethane. After washing the organic layer with water, it was dried over anhydrous sodium sulfate. Subsequent to removal of the sodium sulfate, the solvent was distilled off and the residue was purified by chromatography on a silica gel column (eluent: ethyl acetate). The resulting crystals were recrystallized from a 2:1 mixed solvent of acetone and hexane to afford 1.9 g of 2-(3,4-dichlorophenyl)-3-methyl-1,6-diphenyl-4(1H)-pyridinone having a melting point of 188°-191° C.

1. temperatureAfter heating the reaction mixture
2. temperaturecooled
3. extractionfollowed by extraction with dichloromethane
4. washAfter washing the organic layer with water, it
5. dry with materialwas dried over anhydrous sodium sulfate
6. customSubsequent to removal of the sodium sulfate
7. distillationthe solvent was distilled off
8. customthe residue was purified by chromatography on a silica gel column (eluent: ethyl acetate)
9. customThe resulting crystals were recrystallized from a 2:1 mixed solvent of acetone and hexane