Ethanol → Ethyl 2-hydroxy-5-iodobenzoate

HRID 228614

Reaktionsgleichung

Reaktionsgleichung von HRID 228614
[I:1][C:2]1[CH:10]=[C:6]([C:7]([OH:9])=[O:8])[C:5]([OH:11])=[CH:4][CH:3]=1.Cl.CN(C)[CH2:15][CH2:16]CN=C=N.O.ON1C2C=CC=CC=2N=N1.C(O)C>CN(C)C=O.O>[I:1][C:2]1[CH:10]=[C:6]([C:7]([O:9][CH2:15][CH3:16])=[O:8])[C:5]([OH:11])=[CH:4][CH:3]=1

Komponenten

7

Edukt 4

HCID 702EthanolHCID 83885-Iodosalicylic acidHCID 27960291-Hydroxybenzotriazole hydrateHCID 21899179Dimethylaminopropyl carbodiimide hydrochloride

Produkt 1

HCID 13013012Ethyl 2-hydroxy-5-iodobenzoateAusbeute 78,2 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

5-Iodosalicylic acid (528 mg), 1-ethyl-3-(3-dimethylaminopropylcarbodiimide hydrochloride (420 mg), 1-hydroxybenzotriazole hydrate (337 mg), and ethanol (2 ml) were dissolved in N,N-dimethylformamide to prepare a solution which was then stirred at room temperature overnight. Water was added to the reaction solution, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was then washed with water and was dried over anhydrous sodium sulfate. The solvent was removed therefrom by distillation under the reduced pressure, and the residue was purified by column chromatography using acetone-hexane to give ethyl 5-iodosalicylate (457 mg, yield 78%).

Aufarbeitung

  1. customto prepare a solution which
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe ethyl acetate layer was then washed with water
  4. dry with materialwas dried over anhydrous sodium sulfate
  5. customThe solvent was removed
  6. distillationby distillation under the reduced pressure
  7. customthe residue was purified by column chromatography

Quellen und Nachweise

ORD-Eintrag
ord-fcb5dffd4b5e41f196399b41cb688971
Quelldatensatz
uspto-grants-2009_07
Patentnummer
US07560558B2

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