Sulfuric Acid → HCID 14303763, Verbindung

Beteiligte Stoffe

Reaktionsschritte

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.

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