反应详情

To a suspension of sodium hydride (60% in oil, 0.75 g) in N,N-dimethylformamide (20 ml) was added a solution of diethyl 3-nitrobenzylphosphonate (4.40 g) in N,N-dimethylformamide (20 ml). The mixture was stirred at room temperature for 15 minutes, then a solution of 4-quinolinecarbaldehyde (2.81 g) in N,N-dimethylformamide (20 ml) was added thereto. After stirring at 50° C. for 30 minutes, the mixture was poured into aqueous sodium bicarbonate, and extracted with ethyl acetate twice. The combined organic solution was washed with aqueous sodium bicarbonate and brine, dried over magnesium sulfate and concentrated. The residue was chromatographed on silica gel column (chloroform-methanol (50:1)) to give 4-[(E)-2-(3-nitrophenyl)vinyl]quinoline (1.57 g) as a solid.

1. stirringAfter stirring at 50° C. for 30 minutes
2. extractionextracted with ethyl acetate twice
3. washThe combined organic solution was washed with aqueous sodium bicarbonate and brine
4. dry with materialdried over magnesium sulfate
5. concentrationconcentrated
6. customThe residue was chromatographed on silica gel column (chloroform-methanol (50:1))