Ethyl Acetate → 3-(2-chloro-6-fluorophenyl)-5-(3-chloro 4-hydroxymethylphenyl)-1-methyl-1H-1,2,4-triazole

HRID 1940744

Reaktionsgleichung

Reaktionsgleichung von HRID 1940744
C([O:4][CH2:5][C:6]1[CH:11]=[CH:10][C:9]([C:12]2[N:16]([CH3:17])[N:15]=[C:14]([C:18]3[C:23]([F:24])=[CH:22][CH:21]=[CH:20][C:19]=3[Cl:25])[N:13]=2)=[CH:8][C:7]=1[Cl:26])(=O)C.[OH-].[Na+].C(OCC)(=O)C>C(O)C.O>[Cl:25][C:19]1[CH:20]=[CH:21][CH:22]=[C:23]([F:24])[C:18]=1[C:14]1[N:13]=[C:12]([C:9]2[CH:10]=[CH:11][C:6]([CH2:5][OH:4])=[C:7]([Cl:26])[CH:8]=2)[N:16]([CH3:17])[N:15]=1

Komponenten

6

Edukt 3

HCID 8857Ethyl AcetateHCID 14798Sodium HydroxideHCID 214636815-(4-acetoxymethyl-3-chlorophenyl)-3-(2-chloro-6-fluorophenyl) 1-methyl-1H-1,2,4-triazole

Produkt 1

HCID 214636723-(2-chloro-6-fluorophenyl)-5-(3-chloro 4-hydroxymethylphenyl)-1-methyl-1H-1,2,4-triazoleAusbeute 67,6 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 702EthanolLösungsmittelHCID 962WaterLösungsmittel

Versuchsvorschrift

5-(4-acetoxymethyl-3-chlorophenyl)-3-(2-chloro-6-fluorophenyl)-1-methyl-1H-1,2,4-triazole (11.1 g) is dissolved in a mixed solvent of ethanol (50 ml) and water (20 ml), added with sodium hydroxide (2.3 g) and heated under reflux for 1 hour with stirring. After cooling to room temperature, the reaction mixture is added with ethyl acetate and washed with water. Then, it is dried over anhydrous magnesium sulfate and concentrated under reduced pressure to obtain crude solid. The crude solid is washed with mixed solvent of hexane-ethanol to give 6.7 g of desired compound (melting point: 111°-113° C.).

Aufarbeitung

  1. temperatureheated
  2. temperatureunder reflux for 1 hour
  3. washwashed with water
  4. dry with materialThen, it is dried over anhydrous magnesium sulfate
  5. concentrationconcentrated under reduced pressure
  6. customto obtain crude solid
  7. washThe crude solid is washed with mixed solvent of hexane-ethanol

Quellen und Nachweise

ORD-Eintrag
ord-ec1c00978d414858b10746b080e24413
Quelldatensatz
uspto-grants-1997_12
Patentnummer
US05700824

Verknüpfte Notizen

Wird geladen…