反应详情

With cooling with ice, trifluoromethanesulfonic acid anhydride (4.04 mL, 24.0 mmol) was added to a mixture of dimethyl 5-hydroxyisophthalate (4.20 g, 20.0 mmol), triethylamine (6.69 mL, 48.0 mmol) and chloroform (40 mL), and stirred for 1 hour with cooling with ice. The reaction mixture was diluted with chloroform, shaken with aqueous saturated sodium hydrogencarbonate solution, then the organic layer was dried with sodium sulfate and concentrated under reduced pressure. The residue was purified through silica gel column chromatography to obtain the title compound as a colorless solid.

1. temperaturewith cooling with ice
2. dry with materialthe organic layer was dried with sodium sulfate
3. concentrationconcentrated under reduced pressure
4. customThe residue was purified through silica gel column chromatography