反应详情

2.61 g of 4,5-bis(4-methoxyphenyl)-2-(2-amino-4-trifluoromethylphenylthio)imidazole hydrochloride is suspended in a mixture of 70 ml of absolute ethanol, 30 ml of absolute dioxane, and 365 mg of hydrochloric acid and combined at 0° with 0.586 g of isoamyl nitrite. The mixture is agitated for 30 minutes, then heated for 2 hours to boiling, and the solution evaporated to dryness under vacuum. The residue is distributed between ethyl acetate and sodium bicarbonate solution. The organic solution is dried over sodium sulfate and concentrated to dryness under vacuum. The residue is crystallized from ether/methylene chloride, thus obtaining 2.01 g of 4,5-bis(4-methoxyphenyl)-2-(4-trifluoromethylphenylthio)imidazole, mp 184°-186°.

1. temperatureheated for 2 hours
2. customthe solution evaporated to dryness under vacuum
3. dry with materialThe organic solution is dried over sodium sulfate
4. concentrationconcentrated to dryness under vacuum
5. customThe residue is crystallized from ether/methylene chloride