Sodium Hydroxide → 3-[3-(2-Phenylimidazol-1-ylmethyl)phenyl]-5-iso-butyl-N-tert-butylthiophene-2-sulfonamide

Participants

Reaction Conditions

Reaction Steps

To a solution of 3-[3-(2-bromoimidazol-1-ylmethyl)phenyl]-5-iso-butyl-N-tert-butylthiophene-2-sulfonamide (58.5 mg, 0.115 mmol; see Example 11(b)) in toluene (5 mL) and ethanol (0.5 mL) was added phenyl boronic acid (55.9 mg, 0.458 mmol), Pd(PPh3)4 (7.9 mg, 6.88 μmol), NaOH (0.46 mL, 0.688 mmol, 1.5 M aq), and the reaction mixture was stirred for 4 h at 90° C. Another portion of phenyl boronic acid (20.0 mg, 0.164 mmol) and Pd(PPh3)4 (2.0 mg, 1.7 μmol) were added and the reaction was stirred overnight at 90° C. The reaction mixture was diluted with EtOAc (30 mL) and washed with water, dried (over anhydrous MgSO4), concentrated in vacuo, and the residue purified by flash chromatography using EtOAc:hexane (8:2) as eluent to give the sub-title compound in 49% yield (28.4 mg, 0.056 mmol).

Provenance & Evidence