Sodium Acetate → 3,3,3-Trifluoro-2-oxopropanal 1-(4-bromo-2-fluoro-5-isopropoxyphenylhydrazone)

HRID 48490

Reaktionsgleichung

Reaktionsgleichung von HRID 48490
C([O-])(=O)C.[Na+].Br[CH:7](Br)[C:8]([C:10]([F:13])([F:12])[F:11])=[O:9].Cl.[Br:16][C:17]1[C:22]([O:23][CH:24]([CH3:26])[CH3:25])=[CH:21][C:20]([NH:27][NH2:28])=[C:19]([F:29])[CH:18]=1>O>[Br:16][C:17]1[C:22]([O:23][CH:24]([CH3:25])[CH3:26])=[CH:21][C:20]([NH:27][N:28]=[CH:7][C:8](=[O:9])[C:10]([F:13])([F:12])[F:11])=[C:19]([F:29])[CH:18]=1

Komponenten

5

Edukt 3

HCID 517045Sodium AcetateHCID 5505231,1-Dibromo-3,3,3-trifluoroacetoneHCID 691429324-Bromo-2-fluoro-5-isopropoxyphenylhydrazine hydrochloride

Produkt 1

HCID 691426513,3,3-Trifluoro-2-oxopropanal 1-(4-bromo-2-fluoro-5-isopropoxyphenylhydrazone)Ausbeute 67,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

First, 50 g (0.61 mol) of sodium acetate and 41 g (0.14 mol) of 1,1-dibromo-3,3,3-trifluoroacetone were mixed with 500 ml of water, and the mixture was stirred at 80° C. for 30 minutes and then cooled to 0° C. Then, 45 g (0.14 mol) of 4-bromo-2-fluoro-5-isopropoxyphenylhydrazine hydrochloride was added at 10° C. or lower, and the mixture was stirred at 10° C. or lower for 3 hours. The precipitated crystals were collected by filtration and dried, which afforded 35 g (94.3 mmol) of 3,3,3-trifluoro-2-oxopropanal 1-(4-bromo-2-fluoro-5-isopropoxyphenylhydrazone).

Aufarbeitung

  1. temperaturecooled to 0° C
  2. stirringlower, and the mixture was stirred at 10° C. or lower for 3 hours
  3. filtrationThe precipitated crystals were collected by filtration
  4. customdried

Quellen und Nachweise

ORD-Eintrag
ord-12e43ba8c0a54ca287305fcda8c0e43d
Quelldatensatz
uspto-grants-2004_03
Patentnummer
US06703503B2

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