p-Toluenesulfonic acid monohydrate → HCID 15947181, compound

Participants

Reaction Conditions

Reaction Steps

The mixture of 2-(5-bromo-thiophen-2-yl)-1-(2,5-dichloro-phenyl)-4-trifluoromethyl-4,5-dihydro-1H-imidazol-4-ol (822 mg, 1.8 mmol) and p-toluenesulfonic acid monohydrate (172 mg, 0.9 mmol) in 10 mL toluene was heated at 120° C. for 6 hrs. The solvent was removed, and the residue was redissolved into dichloromethane, then washed with saturated NaHCO3 and brine, dried over Na2SO4, and concentrated in vacuo. The crude product was purified by chromatography on silica gel (hexane/EtOAc 85/15) to give an off-white solid (512 mg, 64% yield). 1H-NMR (400 MHz, CDCl3): δ 6.68 (d, 1H), 6.89 (d, 1H), 7.31 (dd, 1H), 7.47 (dd, 1H), 7.55 (d, 1H), 7.56 (s, 1H).

Provenance & Evidence