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Toluene → 1-(4-Bromophenyl)-2-methylpropan-2-ol

HRID 72959
ノート
印刷プレビュー

反応式

HRID 72959 の反応式
Br[Mg]C.[C:4]1(C)C=CC=CC=1.[Br:11][C:12]1[CH:17]=[CH:16][C:15]([CH2:18]C(OCC)=O)=[CH:14][CH:13]=1.CC[O:26][CH2:27][CH3:28]>C1COCC1>[Br:11][C:12]1[CH:17]=[CH:16][C:15]([CH2:18][C:27]([CH3:28])([OH:26])[CH3:4])=[CH:14][CH:13]=1
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

6

反応物 4

HCID 1140TolueneHCID 3283Diethyl Ether2 回HCID 7020609Ethyl 2-(4-bromophenyl)acetateHCID 178418573HCID 178418573、化合物

生成物 1

HCID 3167851-(4-Bromophenyl)-2-methylpropan-2-ol収率 73%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

反応条件

温度
40 °C

実験手順

A solution of bromo(methyl)magnesium in diethyl ether (25 mL of 3 M, 74.5 mmol) in THF (8 mL) and toluene (25 mL) was added to a solution of ethyl 2-(4-bromophenyl)acetate (8.23 g, 33.9 mmol) in Et2O (165 mL) and the reaction mixture was stirred at 40° C. for 1 hour. The reaction mixture was quenched by the addition of saturated aqueous ammonium chloride (200 mL) and the phases were separated. The organics were dried over sodium sulfate, filtered and concentrated in vacuo. The resulting residue was purified by silica gel column chromatography eluting with 0-30% EtOAc-hexanes to give 1-(4-bromophenyl)-2-methyl-propan-2-ol (5.68 g, 73%), as a clear oil. ESI-MS m/z calc. 228.1. Found 229.5 (M+1)+; Retention time: 1.45 minutes (3 min run).

後処理

  1. customThe reaction mixture was quenched by the addition of saturated aqueous ammonium chloride (200 mL)
  2. customthe phases were separated
  3. dry with materialThe organics were dried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customThe resulting residue was purified by silica gel column chromatography
  7. washeluting with 0-30% EtOAc-hexanes

出典と根拠

ORDレコード
ord-82f0ec2d64914cbabb059afa026c1533
出典データセット
uspto-grants-2014_09
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08828996B2

反応ノート

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