反应详情

To a solution of 4-chloro-N-({4-chloro-3-[(3-cyano-5-ethenylphenyl)oxy]-2-fluorophenyl}methyl)-1-({[2-(trimethylsilyl)ethyl]oxy}methyl)-1H-imidazole-5-carboxamide (1.12 g, 1.995 mmol) and sodium periodate (1.280 g, 5.98 mmol) in THF (20 ml) and Water (10 ml) was added osmium tetroxide (2.5 wt % 2-butanol) (0.501 ml, 0.040 mmol) and the reaction mixture was stirred at rt for 5 hours. The reaction mixture was diluted with EtOAc and washed with water. The solvent was removed and the crude material was purified via silica gel chromatography to give 4-chloro-N-({4-chloro-3-[(3-cyano-5-formylphenyl)oxy]-2-fluorophenyl}methyl)-1-({[2-(trimethylsilyl)ethyl]oxy}methyl)-1H-imidazole-5-carboxamide (930 mg, 1.650 mmol, 83% yield). 1H NMR (400 MHz, METHANOL-d4) δ ppm 9.94 (s, 1H), 8.71 (d, 1H), 8.00 (s, 1H), 7.90 (s, 1H), 7.61 (d, 1H), 7.34-7.47 (m, 2H), 5.59 (s, 2H), 4.47-4.70 (m, 2H), 3.50 (t, 2H), 0.83 (t, 2H), −0.05 (s, 9H).

1. washwashed with water
2. customThe solvent was removed
3. customthe crude material was purified via silica gel chromatography