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

HRID 527076Notes

Reaction equation

[F:1][C:2]1[C:3]([O:21][CH3:22])=[C:4]2[CH:10]=[CH:9][N:8]([S:11]([C:14]3[CH:20]=[CH:19][C:17]([CH3:18])=[CH:16][CH:15]=3)(=[O:13])=[O:12])[C:5]2=[N:6][CH:7]=1.[Br:23]Br>C(Cl)(Cl)Cl.O>[F:1][C:2]1[C:3]([O:21][CH3:22])=[C:4]2[C:10]([Br:23])=[CH:9][N:8]([S:11]([C:14]3[CH:20]=[CH:19][C:17]([CH3:18])=[CH:16][CH:15]=3)(=[O:13])=[O:12])[C:5]2=[N:6][CH:7]=1

Participants

Conditions

Temperature: 0 °C

Procedure

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.

Workup

temperatureslowly warmed to ambient temperature
customquenched with aqueous sodium bicarbonate
extractionThe aqueous phase was extracted with methylene chloride
dry with materialdried over sodium sulfate
customThe resulting solid was purified via silica gel chromatography (15-30% EtOAc/Hexanes)

Sources & evidence

ORD record: ord-07f4c8515dda4c2699e89d79f84e5f23
Source dataset: uspto-grants-2016_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09345708B2

Reaction notes

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