Triethylamine → 2,2-Dimethyl-propionic acid 4-(4-fluoro-benzyl)-3-oxo-2-(2,4,6-trimethyl-phenyl)-cyclopent-1-enyl ester

HRID 1631886ノート

反応式

HRID 1631886 の反応式
[F:1][C:2]1[CH:24]=[CH:23][C:5]([CH2:6][CH:7]2[CH2:11][C:10](=[O:12])[CH:9]([C:13]3[C:18]([CH3:19])=[CH:17][C:16]([CH3:20])=[CH:15][C:14]=3[CH3:21])[C:8]2=[O:22])=[CH:4][CH:3]=1.C(N(CC)CC)C.[C:32](Cl)(=[O:37])[C:33]([CH3:36])([CH3:35])[CH3:34]>ClCCl>[F:1][C:2]1[CH:24]=[CH:23][C:5]([CH2:6][CH:7]2[CH2:11][C:10]([O:12][C:32](=[O:37])[C:33]([CH3:36])([CH3:35])[CH3:34])=[C:9]([C:13]3[C:18]([CH3:19])=[CH:17][C:16]([CH3:20])=[CH:15][C:14]=3[CH3:21])[C:8]2=[O:22])=[CH:4][CH:3]=1

参加物

5

反応物 3

HCID 8471TriethylamineHCID 62493Pivaloyl chlorideHCID 668680864-(4-Fluoro-benzyl)-2-(2,4,6-trimethyl-phenyl)-cyclopentane-1,3-dione

生成物 1

HCID 668682352,2-Dimethyl-propionic acid 4-(4-fluoro-benzyl)-3-oxo-2-(2,4,6-trimethyl-phenyl)-cyclopent-1-enyl ester収率 84.3%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

To a solution of 4-(4-fluoro-benzyl)-2-(2,4,6-trimethyl-phenyl)-cyclopentane-1,3-dione (30 mg, 0.09 mmol) in dichloromethane (1 ml) and triethylamine (52 μl, 0.37 mmol) is added the pivaloyl chloride (34 μl, 0.37 mmol) at room temperature. The reaction mixture is stirred overnight at room temperature. Silica gel is added to the crude reaction mixture, the solvent is evaporated under reduced pressure and the residue is purified by flash chromatography on silica gel to give 2,2-dimethyl-propionic acid 4-(4-fluoro-benzyl)-3-oxo-2-(2,4,6-trimethyl-phenyl)-cyclopent-1-enyl ester (31 mg).

後処理

  1. additionSilica gel is added to the crude
  2. customreaction mixture
  3. customthe solvent is evaporated under reduced pressure
  4. customthe residue is purified by flash chromatography on silica gel

出典と根拠

ORDレコード
ord-ed585fa866e641b890212f364d8311ea
出典データセット
uspto-grants-2014_07
特許番号
US08791303B2

反応ノート

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