Water → HCID 66681701, compound

Participants

Reaction Conditions

Reaction Steps

t-Butyl 2-{3-[(1S)-2-methoxy-1-methylethoxy]-5-[4-(methylsulfonyl)phenoxy]phenyl}-1H-pyrrole-1-carboxylate (2.70 g, 5.38 mmol) synthesized in Example (13b) was dissolved in tetrahydrofuran (50 mL), and cooled to 0° C. After addition of N-bromosuccinimide (960 mg, 5.38 mmol) with stirring under nitrogen atmosphere, stirring was carried out at room temperature for 4 hours. Water (50 mL) was added, and extraction was carried out with ethyl acetate (50 mL). The organic layer was washed with saturated brine, and subsequently dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure, and the resulting residue was purified using silica gel column chromatography (elution solvent: ethyl acetate/hexane=20%-40%) to afford the desired compound (2.93 g, yield 94%) as a brown oil.

Provenance & Evidence