反应详情

(E)-3-(2-Methoxy-5-nitro-phenyl)-acrylic acid (Egypt. J. Pharm. Sci., (1996), 37, 71-84), (1.0 g) in dimethylformamide (5 ml) was treated with EDC.HCl (0.86 g), N-hydroxybenzotriazole (0.1 g) and methylamine (2M in tetrahydrofuran 3 ml) and stirred for 18 h. Solvent was removed at reduced pressure, the residue dissolved in dichloromethane, washed with 2N HCl, sodium hydrogen carbonate and brine. After drying (MgSO4), solvent was removed at reduced pressure and the residue column chromatographed (silica gel, 5% methanol:dichloromethane) to give the title compound (0.75 g). 1H NMR δ: 2.71 (3H, d, J=4.7Hz), 4.01 (3H, s), 6.71 (1H, d, J=15.9 Hz), 7.30 (1H, d, J=9.2 Hz), 7.62 (1H, d, J=15.9 Hz), 8.09 (1H, m), 8.25 (1H, dd, J=2.8, 9.2 Hz), 8.36 (1H, d, J=2.8 Hz).

1. customSolvent was removed at reduced pressure
2. dissolutionthe residue dissolved in dichloromethane
3. washwashed with 2N HCl, sodium hydrogen carbonate and brine
4. dry with materialAfter drying (MgSO4), solvent
5. customwas removed at reduced pressure
6. customthe residue column chromatographed (silica gel, 5% methanol:dichloromethane)