Dimethylformamide → HCID 19961482, Verbindung

HRID 1196789Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1196789
[Cl:1][C:2]([Cl:10])(C(F)F)[C:3]([F:6])([F:5])[F:4].Cl[Si:12]([CH3:15])([CH3:14])[CH3:13].[CH3:16][N:17]([CH3:20])[CH:18]=[O:19]>[Zn]>[CH3:13][Si:12]([CH3:15])([CH3:14])[O:19][CH:18]([N:17]([CH3:20])[CH3:16])[C:2]([Cl:10])([Cl:1])[C:3]([F:6])([F:5])[F:4]

Komponenten

5

Edukt 3

HCID 6228DimethylformamideHCID 6397ChlorotrimethylsilaneHCID 623152,2-Dichloro-1,1,1,3,3-pentafluoropropane

Produkt 1

HCID 19961482HCID 19961482, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 23994ZincKatalysator

Versuchsvorschrift

Until HCFC-225a becomes available in commercial quantities, HCFC-225a may be prepared by a standard and well-known organic synthesis technique. For example, 2,2-dichloro-1,1,1,3,3-pentafluoropropane may be prepared by reacting a dimethylformamide solution of 1,1,1-trichloro-2,2,2-trifluoromethane with chlorotrimethylsilane in the presence of zinc, forming 1-(trimethylsiloxy)-2,2-dichloro-3,3,3-trifluoro-N,N-dimethy lpropylamine. The 1-(trimethylsiloxy)-2,2-dichloro-3,3,3-trifluoro-N,N-dimethyl propylamine is reacted with sulfuric acid to form 2,2-dichloro-3,3,3-trifluoropropionaldehyde. The 2,2-dichloro-3,3,3-trifluoropropionaldehyde is then reacted with sulfur tetrafluoride to produce 2,2-dichloro-1,1,1,3,3-pentafluoropropane.

Aufarbeitung

  1. custommay be prepared by a standard and well-known organic synthesis technique

Quellen und Nachweise

ORD-Eintrag
ord-c60de27f55cf49fd94ee6700d214068f
Quelldatensatz
uspto-grants-1992_05
Patentnummer
US05116526

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