Sulfuric Acid → 1H-Pyrazole, 4,5-diamine-1-methyl-, sulfate (1:1)

HRID 1247771

Reaktionsgleichung

Reaktionsgleichung von HRID 1247771
[NH2:1][C:2]1[N:6]([CH3:7])[N:5]=[CH:4][C:3]=1[N:8]=O.[S:10](=[O:14])(=[O:13])([OH:12])[OH:11]>O.[Pd]>[S:10](=[O:12])(=[O:11])([OH:14])[OH:13].[NH2:8][C:3]1[CH:4]=[N:5][N:6]([CH3:7])[C:2]=1[NH2:1]

Komponenten

5

Edukt 2

HCID 1118Sulfuric AcidHCID 128515805-Amino-1-methyl-4-nitrosopyrazole

Produkt 1

HCID 219045711H-Pyrazole, 4,5-diamine-1-methyl-, sulfate (1:1)

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 23938PalladiumKatalysatorHCID 962WaterLösungsmittel

Versuchsvorschrift

To a solution of 5-amino-1-methyl-4-nitrosopyrazole (1 g) in water (40 ml) were added concentrated sulfuric acid (0.423 ml) and palladium on carbon (0.3 g) under a hydrogen atmosphere. The mixture was stirred overnight. The reaction mixture was filtered, and the filtrate was evaporated in vacuo. To the residue was added isopropyl alcohol, and the resulting precipitate was collected by filtration to give 4,5-diamino-1-methylpyrazole sulfuric acid salt (1.71 g).

Aufarbeitung

  1. filtrationThe reaction mixture was filtered
  2. customthe filtrate was evaporated in vacuo
  3. additionTo the residue was added isopropyl alcohol
  4. filtrationthe resulting precipitate was collected by filtration

Quellen und Nachweise

ORD-Eintrag
ord-d95b855a751240af91eca2fb50ef3e16
Quelldatensatz
uspto-grants-2006_10
Patentnummer
US07129232B2

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