Ethyl 2-(benzofuran-3-yl)acetate → 2-(Benzofuran-3-yl)ethanol

HRID 1767990

Reaktionsgleichung

Reaktionsgleichung von HRID 1767990
[H-].[H-].[H-].[H-].[Li+].[Al+3].C([O:9][C:10](=O)[CH2:11][C:12]1[C:16]2[CH:17]=[CH:18][CH:19]=[CH:20][C:15]=2[O:14][CH:13]=1)C>C1COCC1>[O:14]1[C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][C:16]=2[C:12]([CH2:11][CH2:10][OH:9])=[CH:13]1

Komponenten

4

Edukt 2

HCID 7537531Ethyl 2-(benzofuran-3-yl)acetateHCID 21226445Aluminium lithium hydride

Produkt 1

HCID 109538362-(Benzofuran-3-yl)ethanol

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel2×

Versuchsvorschrift

To a stirred suspension of LiAlH4 (200 mg, excess) in THF at 0° C., ethyl(-1-benzofuran-3-yl)acetate (1.02 g, 5 mmol) in THF (20 mL) was added slowly. After the addition, the reaction mixture was stirred at room temperature for 1 hr and quenched with saturated NH4Cl solution. The product was extracted with chloroform and washed well with water. It was dried over anhydrous MgSO4; filtered and concentrated. The product, 2-(1-benzofuran-3-yl)ethanol, was obtained as a white oil and was pure enough to be taken to the next step without purification. Yield: 800 mg (98%); 163 (M+H).

Aufarbeitung

  1. additionAfter the addition
  2. customquenched with saturated NH4Cl solution
  3. extractionThe product was extracted with chloroform
  4. washwashed well with water
  5. dry with materialIt was dried over anhydrous MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-8a641bb52a5746a98250ce80b141b784
Quelldatensatz
uspto-grants-2007_06
Patentnummer
US07235569B2

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