反应详情

A solution of 7 N ammonia in MeOH (3.14 mL, 21.95 mmol, 10.0 equiv.) and ethyl 2-(6-bromo-1-oxo-1H-isochromen-3-yl)acetate (683 mg, 2.195 mmol) was stirred at room temperature for 1 h. Upon completion of the reaction, the excess solvent was concentrated, diluted with 1 N HCl (5 mL), and extracted with EtOAc (2×5 mL). The organic layer was dried over Na2SO4, filtered and evaporated to dryness. The residue was purified by column chromatography on silica gel eluting with 0-40% EtOAc/hexanes to give 250 mg of methyl 2-(6-bromo-1-oxo-1,2-dihydroisoquinolin-3-yl)acetate as a white solid.

1. customUpon completion of the reaction
2. concentrationthe excess solvent was concentrated
3. additiondiluted with 1 N HCl (5 mL)
4. extractionextracted with EtOAc (2×5 mL)
5. dry with materialThe organic layer was dried over Na2SO4
6. filtrationfiltered
7. customevaporated to dryness
8. customThe residue was purified by column chromatography on silica gel eluting with 0-40% EtOAc/hexanes