1H-1,2,4-Triazole → 1-(4-chlorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethan-1-ol

HRID 745279

Reaktionsgleichung

Reaktionsgleichung von HRID 745279
[H-].[Na+].[NH:3]1[CH:7]=[N:6][CH:5]=[N:4]1.[Cl:8][C:9]1[CH:14]=[CH:13][C:12]([CH:15]([CH2:17]Cl)[OH:16])=[CH:11][CH:10]=1>CN(C)C=O>[Cl:8][C:9]1[CH:14]=[CH:13][C:12]([CH:15]([OH:16])[CH2:17][N:3]2[CH:7]=[N:6][CH:5]=[N:4]2)=[CH:11][CH:10]=1

Komponenten

5

Edukt 3

HCID 92571H-1,2,4-TriazoleHCID 24758Sodium hydrideHCID 1108344-Chloro-alpha-(chloromethyl)benzenemethanol

Produkt 1

HCID 5580621-(4-chlorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethan-1-olAusbeute 77 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

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.

Aufarbeitung

  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

Quellen und Nachweise

ORD-Eintrag
ord-43b8f06b0bc44125a92bc2e0346d2550
Quelldatensatz
uspto-grants-1986_07
Patentnummer
US04598085

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