反应详情

温度

25 °C

A mixture of 4-chloro-5-nitrophthalimide (1.05 g, 4.4 mmol), methyl 2-(3-chloro-4-hydroxyphenyl)acetate (821 mg, 4.4 mmol) and potassium carbonate (1.34 g, 9.7 mmol) in 10 mL of DMSO was allowed to stir at 25° C. for 22 h. Upon completion, the mixture was added to 50 mL of water. The resulting mixture was extracted with ethyl acetate (2×30 ml,). The combined extracts were washed with water (2×30 mL) and brine, dried over anhydrous sodium sulfate and concentrated in vacuo. The crude product was purified by chromatography on a silica gel column using 20% EtOAc/hexane as the eluent to give methyl 2-(3-chloro-4-(6-nitro-1,3-dioxoisoindolin-5-yloxy)phenyl)acetate (30.1). MS ESI (pos.) m/e calcd for (M+H)+ 391.0. found 391.0.

1. extractionThe resulting mixture was extracted with ethyl acetate (2×30 ml,)
2. washThe combined extracts were washed with water (2×30 mL) and brine
3. dry with materialdried over anhydrous sodium sulfate
4. concentrationconcentrated in vacuo
5. customThe crude product was purified by chromatography on a silica gel column