Ethyl diazoacetate → 1H-Pyrazole-3-carboxylic acid, 5-(trifluoromethyl)-, ethyl ester

HRID 536572Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 536572
Br[C:2]([C:4]([F:7])([F:6])[F:5])=[CH2:3].[N+:8](=[CH:10][C:11]([O:13][CH2:14][CH3:15])=[O:12])=[N-:9]>C(OCC)C>[CH2:14]([O:13][C:11]([C:10]1[CH:3]=[C:2]([C:4]([F:7])([F:6])[F:5])[NH:9][N:8]=1)=[O:12])[CH3:15]

Komponenten

4

Edukt 2

HCID 12192Ethyl diazoacetateHCID 2726961-Propene, 2-bromo-3,3,3-trifluoro-

Produkt 1

HCID 27269191H-Pyrazole-3-carboxylic acid, 5-(trifluoromethyl)-, ethyl ester

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 3283Diethyl EtherLösungsmittel2×

Versuchsvorschrift

To a solution of 2-bromo-3,3,3-trifluoro-1-propene (1 g, 5.716 mmol) in diethyl ether (2 ml) cooled with ice-bath under N2 atmosphere a solution of ethyl diazoacetate (1.06 ml, 8.574 mmol) in diethyl ether (3 ml) was added drop wise. The mixture was warmed to RT and then refluxed for 3 hours. The volatiles were removed under vacuum. Vacuum distillation provided the title compound.

Aufarbeitung

  1. additionwas added drop wise
  2. temperaturerefluxed for 3 hours
  3. customThe volatiles were removed under vacuum
  4. distillationVacuum distillation

Quellen und Nachweise

ORD-Eintrag
ord-576ab71b7bcc417184250689c382f866
Quelldatensatz
uspto-grants-2014_10
Patentnummer
US08859606B2

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