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

HRID 713044
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 713044
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
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Komponenten

6

Edukt 4

HCID 1140TolueneHCID 3283Diethyl Ether2×HCID 7020609Ethyl 2-(4-bromophenyl)acetateHCID 178418573HCID 178418573, Verbindung

Produkt 1

HCID 3167851-(4-Bromophenyl)-2-methylpropan-2-olAusbeute 73 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028
Tetrahydrofuran
Lösungsmittel

Reaktionsbedingungen

Temperatur
40 °C

Versuchsvorschrift

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).

Aufarbeitung

  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

Quellen und Nachweise

ORD-Eintrag
ord-50a8483d17614887afefbb0b638c147d
Quelldatensatz
uspto-grants-2015_11
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09181273B2

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