反应详情

To a suspension of AlCl3 (3.38 g, 25.38 mmol) in dichloromethane (100 mL) was added 5-Bromo-1H-pyrrolo[2,3-b]pyridine (1 g, 5.07 mmol). After stirring for 30 min, chloroacetyl chloride (2.84 g, 25.38 mmol) was added and the reaction mixture was stirred for 2 hours at room temperature. On completion, solvents were evaporated and quenched with aq. NaHCO3 solution at 0° C. Resulting mixture was extracted with EtOAc. The organic layer was dried over Na2SO4 and filtered through a plug of silica gel. Solvent was evaporated to dryness to give 1-(5-Bromo-1H-pyrrolo[2,3-b]pyridin-3-yl)-2-chloro-ethanone (1.3 g, 93% yield).

1. stirringthe reaction mixture was stirred for 2 hours at room temperature
2. customOn completion, solvents were evaporated
3. customquenched with aq. NaHCO3 solution at 0° C
4. customResulting mixture
5. extractionwas extracted with EtOAc
6. dry with materialThe organic layer was dried over Na2SO4
7. filtrationfiltered through a plug of silica gel
8. customSolvent was evaporated to dryness