反应详情

3.7 g (52.6 mmol) of 1,2,4-triazole are added, with stirring, to a solution of 0.11 g (47 mmol) of sodium in 30 ml of n-propanol at room temperature. The mixture is heated to reflux temperature and a solution of 15.4 g (47 mmol) of 2-(2,4-dichlorophenyl-tert.-butyl)-2-(1,2,4-triazol-1-ylmethyl)oxirane in 20 ml of n-propanol is added. The reaction mixture is heated under reflux for 15 hours, then cooled and added to water. The mixture is extracted with methylenechloride, and the organic phase is dried over sodium sulphate and evaporated. The residue is purified by column chromatography (silica gel; ethyl acetate:cyclohexane=3:1). 3.5 g (18.8% of theory) of 4-(2,4-dichlorophenyl)-3,3-dimethyl-2-(1,2,4-triazol-1-ylmethyl)-1-(1,2,4-triazol-1-yl)-2-butanol of melting point 126° C. are obtained.

1. temperatureThe mixture is heated
2. temperatureto reflux temperature
3. temperatureThe reaction mixture is heated
4. temperatureunder reflux for 15 hours
5. temperaturecooled
6. extractionThe mixture is extracted with methylenechloride
7. dry with materialthe organic phase is dried over sodium sulphate
8. customevaporated
9. customThe residue is purified by column chromatography (silica gel; ethyl acetate:cyclohexane=3:1)