Hydrochloric Acid → 1-methyl-3-(pentafluoroethyl)-4-(trifluoromethyl)-1H-pyrazole-5-carboxylic acid

HRID 1843066Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1843066
[C:1]([C:3]1[N:7]([CH3:8])[N:6]=[C:5]([C:9]([F:15])([F:14])[C:10]([F:13])([F:12])[F:11])[C:4]=1[C:16]([F:19])([F:18])[F:17])#N.[OH-:20].[Na+].Cl.[OH2:23]>>[CH3:8][N:7]1[C:3]([C:1]([OH:23])=[O:20])=[C:4]([C:16]([F:19])([F:18])[F:17])[C:5]([C:9]([F:15])([F:14])[C:10]([F:13])([F:12])[F:11])=[N:6]1

Komponenten

5

Edukt 4

HCID 313Hydrochloric AcidHCID 962WaterHCID 14798Sodium HydroxideHCID 866600911-Methyl-3-(perfluoroethyl)-4-(trifluoromethyl)-1H-pyrazole-5-carbonitrile

Produkt 1

HCID 866600921-methyl-3-(pentafluoroethyl)-4-(trifluoromethyl)-1H-pyrazole-5-carboxylic acid

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

11.0 g (37.5 mmol) of 5-cyano-1-methyl-3-pentafluoroethyl-4-trifluoromethyl-1H-pyrazole, 22 ml of 50% strength sodium hydroxide solution and 7.0 ml of distilled water are heated in an oil bath until the solid has dissolved. The reaction mixture is then stirred overnight (oil bath temperature 100° C.). After cooling, the reaction mixture is poured onto a mixture of 150 ml of concentrated hydrochloric acid and 150 ml of ice. The mixture is afterstirred for 30 minutes and the solid is filtered off. The solid is washed with a small amount of water and then dried in an oil pump vacuum. This gives 11.2 g (95%) of 1-methyl-3-pentafluoroethyl-4-trifluoromethyl-1H-pyrazole-5-carboxylic acid as a white solid.00

Aufarbeitung

  1. dissolutionhas dissolved
  2. temperatureAfter cooling
  3. waitThe mixture is afterstirred for 30 minutes
  4. filtrationthe solid is filtered off
  5. washThe solid is washed with a small amount of water
  6. customdried in an oil pump vacuum

Quellen und Nachweise

ORD-Eintrag
ord-57585db7acf7416c927a88fbc3f82a95
Quelldatensatz
uspto-grants-2015_02
Patentnummer
US08946234B2

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