反应详情

To 4-chloro-3-methylaniline (3.33 g, 19.98 mmole) in dichloromethane (100 mL) and pyridine (20 mL) was added cinnamoyl chloride (2.83 g, 19.98 mmole) at 0° C. The mixture was stirred at room temperature for 2 h. Solvent and pyridine were removed by rotary evaporator under reduced pressure. The residue was diluted with ethyl acetate and washed 1N HCl (2×100 mL), water (2×100 mL), sodium bicarbonate solution (2×100 mL) and dried over sodium sulfate. After removing solvent a white solid was recovered (5.38 g, 99% yield). The product was used for the next step without further purification. 1H NMR (400 MHz, DMSO-d6): δ 7.76-7.24 (m, 10H), 6.58 (d, 1H), 2.55 (s, 3H); MS (ESI) m/z: Calculated for C16H14ClNO: 271.1. found: 272 (M+H)+.

1. customSolvent and pyridine were removed by rotary evaporator under reduced pressure
2. additionThe residue was diluted with ethyl acetate
3. washwashed 1N HCl (2×100 mL), water (2×100 mL), sodium bicarbonate solution (2×100 mL)
4. dry with materialdried over sodium sulfate
5. customAfter removing solvent a white solid
6. customwas recovered (5.38 g, 99% yield)
7. customThe product was used for the next step without further purification