反应详情

温度

90 °C

Anhydrous DMF (3 ml) was added to a flask charged with dimethyl 5-aminoisophthalate (0.250 g, 1.2 mmol, 1 eq) and 4-dimethylaminopyridine (0.308 g, 2.52 mmol, 2.1 eq) under Ar. 1,4-diiodobutane (0.16 ml, 0.37 g, 1.20 mmol, 1 eq) was added with stirring and the solution was heated to 90° C. After heating overnight the reaction was not complete. More diiodide (0.25 ml, 1.9 mmol, 1.6 eq) was added and the reaction was heated to 100° C. After heating overnight the reaction was cooled to room temperature and poured in water. The mixture was extracted with EtOAc (×2). The combined organic extracts were washed with water (×3), brine (×1), and dried over Na2SO4. The inorganics were filtered off, and the solvent was removed in vacuo. The residue was stirred in CH2Cl2 and filtered through cotton to remove any insoluble material. The solvent was removed in vacuo. Purification via flash chromatography yielded the crude product. The crude was triturated with hexanes and the solid was collected via filtration. 0.167 g (0.63 mmol, 53% yield) of the product was collected.

1. temperatureAfter heating overnight the reaction
2. temperaturethe reaction was heated to 100° C
3. temperatureAfter heating overnight the reaction
4. temperaturewas cooled to room temperature
5. extractionThe mixture was extracted with EtOAc (×2)
6. washThe combined organic extracts were washed with water (×3), brine (×1)
7. dry with materialdried over Na2SO4
8. filtrationThe inorganics were filtered off
9. customthe solvent was removed in vacuo
10. stirringThe residue was stirred in CH2Cl2
11. filtrationfiltered through cotton
12. customto remove any insoluble material
13. customThe solvent was removed in vacuo
14. customPurification via flash chromatography