Dimethylformamide → Methyl 2-bromo-2',4'-difluoro-5-isopropoxybiphenyl-4-carboxylate

Participants

Reaction Steps

Dibromoisocyanuric acid (2.19 g) was added to a mixture of methyl 2′,4′-difluoro-3-isopropoxybiphenyl-4-carboxylate (3.90 g) and DMF (40 mL), and the mixture was stirred at room temperature for 3 hours. Water was added to the reaction mixture, followed by extraction with ethyl acetate. The obtained organic layer was washed with water and saturated saline in this order and dried over anhydrous magnesium sulfate, and then, the solvent was distilled off under reduced pressure. The obtained residue was purified by silica gel column chromatography (hexane/ethyl acetate) to obtain the title compound (4.90 g)

Provenance & Evidence