Benzo(B)Thiophene-2-Boronic Acid → HCID 58762262, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of Benzo[b]thiophene-2-boronic acid (0.71 g, 4 mmol), 1-bromo-3-fluoro-4-iodobenzene (1 g, 3.3 mmol), bis(triphenylphospine)palladium(II) chloride (46 mg, 2 mol %), NaHCO3 (0.83 g, 9.9 mmol) in DME (4 mL) and H2O (4 mL) was heated to 80° C. under N2 for 72 h. The reaction mixture was partitioned between 1N HCl and EtOAc. The organic layer was washed with saturated NaHCO3, brine, dried over Na2SO4 and concentrated. The residue was purified by silica gel chromatography (hexanes) to give the title compound as a white solid (0.13 g, 13%). 1H NMR (CDCl3): δ 7.33-7.41 (m, 4H), 7.57 (m, 1H), 7.72 (s, 1H), 1.80-7.86 (m, 2H).

Provenance & Evidence