Hydrochloric Acid → 1-(2,3,5,6-Tetrafluoro-4-trifluoromethylphenyl)-5-hydroxymethylcarbonylamino-4-nitropyrazole

HRID 257320Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 257320
[F:1][C:2]1[C:7]([F:8])=[C:6]([C:9]([F:12])([F:11])[F:10])[C:5]([F:13])=[C:4]([F:14])[C:3]=1[N:15]1[C:19]([NH:20][C:21]([CH2:23][O:24]C(C)=O)=[O:22])=[C:18]([N+:28]([O-:30])=[O:29])[CH:17]=[N:16]1.[OH-].[Na+].Cl>C(O)C.O>[F:1][C:2]1[C:7]([F:8])=[C:6]([C:9]([F:12])([F:11])[F:10])[C:5]([F:13])=[C:4]([F:14])[C:3]=1[N:15]1[C:19]([NH:20][C:21]([CH2:23][OH:24])=[O:22])=[C:18]([N+:28]([O-:30])=[O:29])[CH:17]=[N:16]1

Komponenten

6

Edukt 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 197830571-(2,3,5,6-Tetrafluoro-4-trifluoromethylphenyl)-5-methylcarbonyloxymethylcarbonylamino-4-nitropyrazole

Produkt 1

HCID 197830561-(2,3,5,6-Tetrafluoro-4-trifluoromethylphenyl)-5-hydroxymethylcarbonylamino-4-nitropyrazoleAusbeute 54,8 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 702EthanolLösungsmittel2×HCID 962WaterLösungsmittel

Versuchsvorschrift

A mixture of 1.5 grams (0.0034 mole) of 1-(2,3,5,6-tetrafluoro-4-trifluoromethylphenyl)-5-methylcarbonyloxymethylcarbonylamino-4-nitropyrazole, 2.63 mL of a 2N aqueous sodium hydroxide solution, 1.5 mL of ethanol, and 4.7 mL of water was stirred at room temperature for 15 minutes. After the pH was adjusted to 5.0 with dilute hydrochloric acid, ethanol was removed from the mixture by distillation under reduced pressure. The remaining aqueous phase was extracted with methylene chloride, and the extract was washed with water. The washed organic phase was dried over anhydrous magnesium sulfate and filtered. The filtrate was evaporated under reduced pressure to yield 0.75 gram of 1-(2,3,5,6-tetrafluoro-4-trifluoromethylphenyl)- 5-hydroxymethylcarbonylamino-4-nitropyrazole as a solid (compound 19 of Table 1). The nmr spectrum was consistent with the proposed structure.

Aufarbeitung

  1. customwas removed from the mixture by distillation under reduced pressure
  2. extractionThe remaining aqueous phase was extracted with methylene chloride
  3. washthe extract was washed with water
  4. dry with materialThe washed organic phase was dried over anhydrous magnesium sulfate
  5. filtrationfiltered
  6. customThe filtrate was evaporated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-32f1cf0a41554a7bbb9e5b0887079c72
Quelldatensatz
uspto-grants-1993_11
Patentnummer
US05262382

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