Ethyl 2-(4-bromophenyl)propanoate → 2-(4-Bromophenyl)propan-1-ol

HRID 735687ノート

反応式

HRID 735687 の反応式
[Br:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]([CH3:14])[C:9](OCC)=[O:10])=[CH:4][CH:3]=1.[H-].C([Al+]CC(C)C)C(C)C>C(Cl)Cl>[Br:1][C:2]1[CH:3]=[CH:4][C:5]([CH:8]([CH3:14])[CH2:9][OH:10])=[CH:6][CH:7]=1

参加物

4

反応物 2

HCID 13840376Ethyl 2-(4-bromophenyl)propanoateHCID 21225700Diisobutylaluminumhydride

生成物 1

HCID 5690622-(4-Bromophenyl)propan-1-ol収率 91.4%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

To a solution of 73A (3.06 g, 11.9 mmol) in 50 mL CH2Cl2 at −78° C., was added a solution of diisobutylaluminum hydride (35.7 mL, 35.7 mmol, 1M in hexanes). The mixture was removed from the cooling bath, stirred 1 h, then recooled to −50° C. and quenched with EtOAc (2 mL). The reaction mixture was diluted with H2O, then extracted with EtOAc (3×). The combined organic extract washed with brine, dried (Na2SO4), filtered through a 1″ pad of SiO2, then concentrated to afford 2.34 g of 73B as a colorless oil. MS (ESI) m/z 197.1 (M-OH)+.

後処理

  1. customThe mixture was removed from the cooling bath
  2. customrecooled to −50° C.
  3. customquenched with EtOAc (2 mL)
  4. additionThe reaction mixture was diluted with H2O
  5. extractionextracted with EtOAc (3×)
  6. extractionThe combined organic extract
  7. washwashed with brine
  8. dry with materialdried (Na2SO4)
  9. filtrationfiltered through a 1″ pad of SiO2
  10. concentrationconcentrated

出典と根拠

ORDレコード
ord-bd03e5fab0324f5eb002df79d4521b01
出典データセット
uspto-grants-2009_09
特許番号
US07592331B2

反応ノート

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