Ammonia → 3-(4-Methyl-1H-imidazol-1-yl)-5-(trifluoromethyl)aniline

Participants

Reaction Conditions

Reaction Steps

A suspension of 3-bromo-5-(trifluoromethyl)aniline (4.8 g, 20 mmol), 4-methylimidazole (1.97 g, 24 mmol), K2CO3 (3.04 g, 22 mmol), CuI (0.57 g, 3 mmol) and 8-hydroxyquinoline (0.44 g, 3 mmol) in 20 mL DMSO was stirred at 120° C. in a sealed tube under Ar2 for 16 hrs. The mixture was cooled down to 50° C. and 28% aq ammonia (10 mL) was added. The mixture was maintained at this temperature for 1 h. After cooling to rt, H2O and EtOAc were added. The aqueous layer was extracted with EtOAc (60 mL×3) and the organic layer was washed with brine, dried with Na2SO4, after filtration, the filtrate was concentrated under reduced pressure and purified by chromatography on silica gel (CH2Cl2/CH3OH 97:3) to give 2.85 g product as pale yellow solid (59.1%). 1H NMR (300 MHz, CDCl3) δ: 7.76 (1 H, s), 7.01 (1 H, s), 6.94 (1 H, s), 6.84 (1 H, s), 6.78 (1 H, s), 4.11 (2 H, brs), 2.29 (3 H, s). LCMS: m/z [M+H]+ 242.0966.

Provenance & Evidence