反应详情

To a stirred suspension of 3.4 parts of a sodium hydride dispersion 78% in 90 parts of N,N-dimethylformamide are added portionwise, during a 5 minutes-period, 6.9 parts of 1H-1,2,4-triazole. After stirring for 10 minutes at room temperature, there are added 19.1 parts of 4-chloro-α-(chloromethyl)benzenemethanol. The whole is stirred and refluxed for 8 hours. The reaction mixture is cooled and poured onto water. The product is extracted with dichloromethane. The extract is washed with water, dried, filtered and evaporated. The residue is triturated in 2,2'-oxybispropane. The product is filtered off and crystallized from methylbenzene, yielding 17.3 parts (77%) of α-(4-chlorophenyl)-1H-1,2,4-triazole-1-ethanol; mp. 119° C.

1. stirringThe whole is stirred
2. temperaturerefluxed for 8 hours
3. temperatureThe reaction mixture is cooled
4. additionpoured onto water
5. extractionThe product is extracted with dichloromethane
6. washThe extract is washed with water
7. customdried
8. filtrationfiltered
9. customevaporated
10. customThe residue is triturated in 2,2'-oxybispropane
11. filtrationThe product is filtered off
12. customcrystallized from methylbenzene