反应详情

434 mg (2.44 mmol) of N-bromosuccinimide is added to 500 mg (1.95 mmol) of 4-oxo-4,5-dihydro-3H-pyrrolo[2,3-c]quinoline-1-ethyl carboxylate (synthesis 1) dissolved in 10 ml of anhydrous dimethylformamide and the reaction mixture is stirred for 1 h at room temperature. The mixture is then diluted in 10 mL of ethyl acetate, the solid is filtered, rinsed with diethyl ether then recrystallized from acetic acid to give 360 mg (55%) of 8-bromo-4-oxo-4,5-dihydro-3H-pyrrolo[2,3-c]quinoline-1-ethyl carboxylate cocrystallized with one equivalent of acetic acid in the form of a white solid.

1. filtrationthe solid is filtered
2. washrinsed with diethyl ether
3. customthen recrystallized from acetic acid