Bromine → 5-fluoro-4-methoxy-3-bromo-1-tosyl-1H-pyrrolo[2,3-b]pyridine

Participants

Reaction Conditions

Reaction Steps

To a cold (0° C.) solution of 5-fluoro-4-methoxy-1-tosyl-1H-pyrrolo[2,3-b]pyridine, 68b, (0.79 g, 2.45 mmol) in chloroform (50 mL) was added bromine (0.13 mL, 2.45 mmol). The reaction mixture was stirred at 0° C. for 3 hours and then slowly warmed to ambient temperature. The mixture was diluted with deionized water and quenched with aqueous sodium bicarbonate. The aqueous phase was extracted with methylene chloride and dried over sodium sulfate. The resulting solid was purified via silica gel chromatography (15-30% EtOAc/Hexanes) to give 170 mg of the desired product.

Provenance & Evidence