Hydrochloric Acid → 3-Chloro-4-hydroxy-2-(trifluoromethyl)benzaldehyde

HRID 984492Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 984492
C(Cl)(Cl)Cl.[C:5]([O-])([O-])=[O:6].[K+].[K+].[Cl:11][C:12]1[C:17]([C:18]([F:21])([F:20])[F:19])=[CH:16][CH:15]=[CH:14][C:13]=1[OH:22].Cl>O>[Cl:11][C:12]1[C:17]([C:18]([F:20])([F:21])[F:19])=[C:16]([CH:15]=[CH:14][C:13]=1[OH:22])[CH:5]=[O:6]

Komponenten

6

Edukt 4

HCID 313Hydrochloric AcidHCID 6212ChloroformHCID 11430Potassium CarbonateHCID 27366012-Chloro-3-(trifluoromethyl)phenol

Produkt 1

HCID 109331373-Chloro-4-hydroxy-2-(trifluoromethyl)benzaldehydeAusbeute 11,7 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

Chloroform (6.7 g, 2.0 eq.) was added dropwise to a stirred mixture of Ca(OH)2 (8.95 g, 120 mmol.), K2CO3 (13.5 g, 98 mmol.), 2-chloro-3-(trifluoromethyl)phenol (5.0 g, 22 mmol.), and H2O (50 mL) at 60-70° C. over 2 h. The reaction mixture was cooled, and acidified with conc. HCl. The product was extracted into EtOAc and dried over Na2SO4. Solvent was evaporated, the crude product was separated and purified through a silica column, eluting with hexane and EtOAc (3:2) to give 580 mg (10%) of the title compound.

Aufarbeitung

  1. temperatureThe reaction mixture was cooled
  2. extractionThe product was extracted into EtOAc
  3. dry with materialdried over Na2SO4
  4. customSolvent was evaporated
  5. customthe crude product was separated
  6. custompurified through a silica column
  7. washeluting with hexane and EtOAc (3:2)

Quellen und Nachweise

ORD-Eintrag
ord-8262694632d1443c9d51f89e356560ea
Quelldatensatz
uspto-grants-2005_03
Patentnummer
US06867203B2

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