Acetic Acid → 1-Chloro-2-(2,4-difluorophenyl)-3-(1,2,4-triazol-1-yl)-2-(trimethylsilyloxy) propane

HRID 725773

Reaktionsgleichung

Reaktionsgleichung von HRID 725773
[O:1]1[C:3]([C:6]2[CH:11]=[CH:10][C:9]([F:12])=[CH:8][C:7]=2[F:13])([CH2:4][Cl:5])[CH2:2]1.[CH3:14][Si:15]([CH3:22])([CH3:21])N1C=NC=N1.[N:23]1([K])[CH:27]=[N:26][CH:25]=[N:24]1.C(O)(=O)C>CN(C)C=O.O>[Cl:5][CH2:4][C:3]([C:6]1[CH:11]=[CH:10][C:9]([F:12])=[CH:8][C:7]=1[F:13])([O:1][Si:15]([CH3:22])([CH3:21])[CH3:14])[CH2:2][N:23]1[CH:27]=[N:26][CH:25]=[N:24]1

Komponenten

7

Edukt 4

HCID 176Acetic AcidHCID 875581-Trimethylsilyl-1,2,4-triazoleHCID 111833262-(Chloromethyl)-2-(2,4-difluorophenyl)oxiraneHCID 178506625HCID 178506625, Verbindung

Produkt 1

HCID 155169021-Chloro-2-(2,4-difluorophenyl)-3-(1,2,4-triazol-1-yl)-2-(trimethylsilyloxy) propane

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

4.11 g (0.02 moles) of 1,2-epoxy-2-(2,4-difluorophenyl)-3-chloropropane are reacted with 4.23 g (0.03 moles) of 1-(trimethylsilyl)-1,2,4-triazole and 0.1 g (0.001 mole) of 1,2,4-triazol-1-yl potassium in 50 ml of dimethyl formamide at 50° C. for 2 hours. Then the reaction mixture is neutralized by glacial acetic acid, mixed with 250 ml of water at room temperature and extracted twice with 50 ml of dichloromethane each. The combined extracts are washed three times with 50 ml of water each, dried over water-free sodium sulfate and evaporated in vacuo. The residue is subjected to column chromatography by the method of Example 4 above. After crystallization from n-heptane 4.9 g (71.5%) of the title compound are obtained; m.p.: 59°-61° C.

Aufarbeitung

  1. extractionextracted twice with 50 ml of dichloromethane each
  2. washThe combined extracts are washed three times with 50 ml of water each,
  3. dry with materialdried over water-free sodium sulfate
  4. customevaporated in vacuo
  5. customAfter crystallization from n-heptane 4.9 g (71.5%) of the title compound
  6. customare obtained

Quellen und Nachweise

ORD-Eintrag
ord-367257a8e929448c9b0a58c5707eb0e8
Quelldatensatz
uspto-grants-1998_01
Patentnummer
US05707976

Verknüpfte Notizen

Wird geladen…