Water → HCID 178526116, Verbindung

HRID 23764

Reaktionsgleichung

Reaktionsgleichung von HRID 23764
[O-2:1].[Cr+6:2].[O-2:3].[O-2:4].[FH:5].O.[N:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1>>[Cr:2]([F:5])([O-:4])(=[O:3])=[O:1].[NH+:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1

Komponenten

5

Edukt 4

HCID 962WaterHCID 1049PyridineHCID 14917Hydrofluoric AcidHCID 10219390chromium (VI) trioxide

Produkt 1

HCID 178526116HCID 178526116, Verbindung

Versuchsvorschrift

The process of the present invention comprises the reaction between chromouim(VI) oxide, hydrofluoric acid and pyridine to obtain pyridinium fluorochromate VI (PFC) in quantitative yields and with approximately with 100% of atom economy. The basic mechanism of the reaction comprises the reaction of chromium(VI) oxide with preferably 48% hydrofluoric acid to yield a fluorotrioxochromate(VI) complex. The fluorotrioxochromate(VI) complex is preferably dissolved using minimum amount of water to avoid any loss due to solubility of the product. In the alternate, the fluorotrioxochromate(VI) complex interacts directly with pyridine preferably at ice-cold conditions to obtain pyridinium fluorochromate, PFC. 40% hydrofluoric acid can also be used instead of 48% HF. no excess of hydrofluoric acid is used. Use of excess pyridine is avoided.

Aufarbeitung

  1. customin quantitative yields
  2. customto yield a fluorotrioxochromate(VI) complex
  3. dissolutionThe fluorotrioxochromate(VI) complex is preferably dissolved

Quellen und Nachweise

ORD-Eintrag
ord-df9c5fdf9d984b1f8ba9402228cd49b1
Quelldatensatz
uspto-grants-2005_02
Patentnummer
US06852859B2

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