Aluminium lithium hydride → 2-(5-Fluorobenzofuran-3-yl)ethanol

HRID 1178809노트

반응식

HRID 1178809 반응식
[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]([F:21])[CH:19]=[CH:20][C:15]=2[O:14][CH:13]=1)C>C1COCC1>[F: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

참가 물질

4

반응물 2

HCID 21226445Aluminium lithium hydrideHCID 23614458Ethyl 2-(5-fluorobenzofuran-3-yl)acetate

생성물 1

HCID 181842942-(5-Fluorobenzofuran-3-yl)ethanol

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매2회

실험 절차

To a stirred suspension of LiAlH4 (200 mg, excess) in THF at 0° C., ethyl(5-fluoro-1-benzofuran-3-yl)acetate (1.11 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-fluoro-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: 820 mg (91%); (M+H): 181.

후처리

  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

출처 및 근거

ORD 기록
ord-db61146627cb4adba9a3549690cd4602
출처 데이터셋
uspto-grants-2007_10
특허 번호
US07276603B2

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