Hydrochloric Acid → 1-(4-Benzyloxy-3-chlorophenyl)-2,2,2-trifluoroethanol

HRID 2113161

Reaktionsgleichung

Reaktionsgleichung von HRID 2113161
[CH2:1]([O:8][C:9]1[CH:16]=[CH:15][C:12]([CH:13]=[O:14])=[CH:11][C:10]=1[Cl:17])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C[Si](C)(C)[C:20]([F:23])([F:22])[F:21].[F-].C([N+](CCCC)(CCCC)CCCC)CCC.Cl>C1COCC1.C(OCC)(=O)C>[CH2:1]([O:8][C:9]1[CH:16]=[CH:15][C:12]([CH:13]([OH:14])[C:20]([F:23])([F:22])[F:21])=[CH:11][C:10]=1[Cl:17])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Komponenten

7

Edukt 4

HCID 313Hydrochloric AcidHCID 552549(Trifluoromethyl)trimethylsilaneHCID 2724141Tetrabutylammonium FluorideHCID 27354954-(Benzyloxy)-3-chlorobenzaldehyde

Produkt 1

HCID 690509761-(4-Benzyloxy-3-chlorophenyl)-2,2,2-trifluoroethanol

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8028TetrahydrofuranLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Reaktionsbedingungen

Temperatur
25 °C

Versuchsvorschrift

To a solution of 4-benzyloxy-3-chlorobenzaldehyde (4.9 g, 20 mmol) and trimethyl(trifluoromethyl)silane (4.4 mL, 30 mmol) in THF (0.10 L) was added a solution tetrabutylammonium fluoride (1.0 M in THF, 2.0 mL). After the reaction was stirred at 25° C. for 3 h, it was acidified with 2 N HCl to pH 2, diluted with ethyl acetate and washed with brine. The organic phase was dried and concentrated and the residue was purified by chramotography on silica gel eluting with 8:2 hexane:ethyl acetate to give 1-(4-benzyloxy-3-chlorophenyl)-2,2,2-trifluoroethanol.

Aufarbeitung

  1. washwashed with brine
  2. customThe organic phase was dried
  3. concentrationconcentrated
  4. customthe residue was purified by chramotography on silica gel eluting with 8:2 hexane

Quellen und Nachweise

ORD-Eintrag
ord-b99b7676da0141c19ba218f3fcf51726
Quelldatensatz
uspto-grants-2009_04
Patentnummer
US07524882B2

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