反应详情

2-(2-chloro-4-fluoro-5-methoxycarbonylaminophenoxy)phenol [Intermediate compound A9-4] is dissolved in N,N-dimethylformamide, then, potassium carbonate is added, and the mixture is stirred for 1 hour at room temperature. Then, methyl bromoacetate is added at room temperature. The mixture is stirred at 60° C. for 2 hours, poured into water, extracted with ethyl acetate, and the organic layer is washed with dilute hydrochloric acid and water, dried over magnesium sulfate and concentrated to obtain methyl [2-(2-chloro-4-fluoro-5-methoxycarbonylaminophenoxy)phenoxy]acetate [Intermediate compound A9-22].

1. stirringThe mixture is stirred at 60° C. for 2 hours
2. extractionextracted with ethyl acetate
3. washthe organic layer is washed with dilute hydrochloric acid and water
4. dry with materialdried over magnesium sulfate
5. concentrationconcentrated