反应详情

温度

60 °C

To ethyl 4-amino-3-methoxybenzoate (17.8 g, 91.2 mmol), were added acetonitrile (170 mL) and N-chlorosuccinimide (13.4 g, 100 mmol) in this order, and the mixture was stirred at 60° C. for two hours. The mixture was returned to room temperature, and the solvent in the mixture was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (a mixed solvent of n-heptane and ethyl acetate:n-heptane/ethyl acetate=8/1 then 4/1) to obtain the title compound (158 g, 68.8 mmol).

1. customwas returned to room temperature
2. distillationthe solvent in the mixture was distilled off under reduced pressure
3. customThe residue was purified by silica gel column chromatography (a mixed solvent of n-heptane and ethyl acetate