p-Fluoronitrobenzene → 1-[2-Fluoro-4-chloro-5-(4-nitrophenoxy)phenyl]-3-methyl-4-(difluoromethyl)-1H-1,2,4-triazol-5(4H)-one

HRID 1090978Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1090978
[H-].[Na+].[Cl:3][C:4]1[C:9]([OH:10])=[CH:8][C:7]([N:11]2[C:15](=[O:16])[N:14]([CH:17]([F:19])[F:18])[C:13]([CH3:20])=[N:12]2)=[C:6]([F:21])[CH:5]=1.F[C:23]1[CH:28]=[CH:27][C:26]([N+:29]([O-:31])=[O:30])=[CH:25][CH:24]=1>CN(C)C=O>[Cl:3][C:4]1[C:9]([O:10][C:23]2[CH:28]=[CH:27][C:26]([N+:29]([O-:31])=[O:30])=[CH:25][CH:24]=2)=[CH:8][C:7]([N:11]2[C:15](=[O:16])[N:14]([CH:17]([F:18])[F:19])[C:13]([CH3:20])=[N:12]2)=[C:6]([F:21])[CH:5]=1

Komponenten

5

Edukt 3

HCID 9590p-FluoronitrobenzeneHCID 24758Sodium hydrideHCID 137694562-(4-Chloro-2-fluoro-5-hydroxyphenyl)-4-(difluoromethyl)-5-methyl-2,4-dihydro-3H-1,2,4-triazol-3-one

Produkt 1

HCID 199122141-[2-Fluoro-4-chloro-5-(4-nitrophenoxy)phenyl]-3-methyl-4-(difluoromethyl)-1H-1,2,4-triazol-5(4H)-oneAusbeute 76,1 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel2×

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

To a stirred mixture of 0.91 g (0.019 mole) of sodium hydride in 30 mL of N,N-dimethylformamide was added slowly a solution of 5.50 g (0.019 mole) of 1-[4-chloro-2-fluoro-5-hydroxyphenyl)-4-difluoromethyl-4,5-dihydro-3-methyl-1,2,4-triazol-5(1H)-one in 30 mL of N,N-dimethylformamide. To this mixture was added 2.68 g (0.019 mole) of 4-fluoronitrobenzene. The resultant mixture was stirred at room temperature for approximately 18 hours and then was heated at 80° C. for one hour. The mixture was allowed to cool and was poured into ice water. The aqueous mixture was extracted with diethyl ether. The extract was dried over anhydrous magnesium sulfate and filtered. The filtrate was evaporated under reduced pressure to yield 6.0 g of 1-[4-chloro-2-fluoro-5-(4-nitrophenoxy)phenyl]-4-difluoromethyl-4,5-dihydro-3-methyl-1,2,4-triazol-5(1H)-one as a solid, m.p. 115°-117° C., Compound 4 of Table 1.

Aufarbeitung

  1. temperatureto cool
  2. extractionThe aqueous mixture was extracted with diethyl ether
  3. dry with materialThe extract was dried over anhydrous magnesium sulfate
  4. filtrationfiltered
  5. customThe filtrate was evaporated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-c471222f7957415e95444bca2f648932
Quelldatensatz
uspto-grants-1992_01
Patentnummer
US05084085

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