反应详情

A suspension of 5-[2-(4-bromo-2-fluoro-phenyl)-1H-imidazol-4-yl]-1-isopropyl-3-methyl-1H-[1,2,4]triazole (2.9 g, 7.96 mmol) in toluene (50 mL) was treated with ethylene carbonate (25 mL) and heated at reflux for 5 h. The cooled reaction mixture was diluted with DCM and passed through a pad of silica eluting with DCM then 20% methanol in DCM. Methanolic fractions were combined and concentrated in vacuo to give a pale tan solid. The solid was triturated in diethyl ether to give 2-[2-(4-Bromo-2-fluoro-phenyl)-4-(2-isopropyl-5-methyl-2H-[1,2,4]triazol-3-yl)-imidazol-1-yl]-ethanol as a white solid (2.3 g, 71%). LCMS: RT=2.85 min, [M+H]+=408/410. 1H NMR 400 MHz (CDCl3) δ: 8.16 (1H, s), 7.67-7.20 (3H, m), 5.83 (1H, m), 4.05 (2H, t, J=5.10 Hz), 3.92 (2H, t, J=5.10 Hz), 2.44 (3H, s), 1.50 (6H, d, J=6.65 Hz).

1. temperatureheated
2. temperatureat reflux for 5 h
3. customThe cooled reaction mixture
4. concentrationconcentrated in vacuo
5. customto give a pale tan solid
6. customThe solid was triturated in diethyl ether