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Ethyl(5-methoxy-1-benzofuran-3-yl)acetate → 2-(5-Methoxy-1-benzofuran-3-yl)ethanol

HRID 1178816
Notes
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Reaction equation

HRID 1178816 reaction equation
[H-].[H-].[H-].[H-].[Li+].[Al+3].C([O:9][C:10](=O)[CH2:11][C:12]1[C:16]2[CH:17]=[C:18]([O:21][CH3:22])[CH:19]=[CH:20][C:15]=2[O:14][CH:13]=1)C>C1COCC1>[CH3:22][O:21][C:18]1[CH:19]=[CH:20][C:15]2[O:14][CH:13]=[C:12]([CH2:11][CH2:10][OH:9])[C:16]=2[CH:17]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

4

Reactant 2

HCID 15618718Ethyl(5-methoxy-1-benzofuran-3-yl)acetateHCID 21226445Aluminium lithium hydride

Product 1

HCID 149828732-(5-Methoxy-1-benzofuran-3-yl)ethanol

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

To a stirred suspension of LiAlH4 (200 mg, excess) in THF at 0° C., ethyl(5-methoxy-1-benzofuran-3-yl)acetate (1.17 g, 5 mmol) in THF (20 ml) was added slowly. After the addition, 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-(5-methoxy-1-benzofuran-3-yl)ethanol, was obtained as a white oil and was pure enough to be taken to the next step without purification, yielding a yellow oil. Yield: 900 mg (93%); (M+H): 193.

Workup

  1. additionAfter the addition, reaction mixture
  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

Sources & evidence

ORD record
ord-6a7214f3afad4e2f86a942ee10598db4
Source dataset
uspto-grants-2007_10
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07276603B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes