反应详情

Sodium hydride (60%, oily, 200.0 mg) was added to a solution of 1-[4-[2-[N-methyl-N-(2-pyridyl)amino]ethoxy]benzyl]-4-phenylpyrrole-3-carbaldehyde (1.35 g) and ethyl diethylphosphonoacetate (1.10 g) in N,N-dimethylformamide (30 ml) at 0° C., and the mixture was stirred at room temperature for 1 hour. The reaction mixture was poured into ice water, then neutralized using 2N hydrochloric acid, which was extracted with ethyl acetate. The ethyl acetate layer was washed with water, then with saturated aqueous sodium chloride solution, dried (MgSO4), then concentrated. The residue was subjected to silica gel column chromatograpy, and ethyl (E)-3-[1-[4-[2-[N-methyl-N-(2-pyridyl)amino]ethoxy]benzyl]-4-phenyl-3-pyrrolyl]propenoate (1.35 g, yield: 85%) was obtained as an oily substance from the fraction eluted with acetone-hexane (1:2, volume ratio).

1. extractionwas extracted with ethyl acetate
2. washThe ethyl acetate layer was washed with water
3. dry with materialwith saturated aqueous sodium chloride solution, dried (MgSO4)
4. concentrationconcentrated