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Water → 4-(2,6-Dimethylphenyl)benzyl alcohol

HRID 2422241
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 2422241
Br[C:2]1[CH:7]=[CH:6][C:5]([CH2:8][OH:9])=[CH:4][CH:3]=1.[CH3:10][C:11]1[CH:16]=[CH:15][CH:14]=[C:13]([CH3:17])[C:12]=1B(O)O.C(=O)([O-])[O-].[Na+].[Na+].O>C1(C)C(CO)=CC=CC=1.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH3:10][C:11]1[CH:16]=[CH:15][CH:14]=[C:13]([CH3:17])[C:12]=1[C:2]1[CH:7]=[CH:6][C:5]([CH2:8][OH:9])=[CH:4][CH:3]=1
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Komponenten

7

Edukt 4

HCID 962WaterHCID 10340Sodium CarbonateHCID 701194-Bromobenzyl alcoholHCID 5833222,6-Dimethylphenylboronic acid

Produkt 1

HCID 230828914-(2,6-Dimethylphenyl)benzyl alcoholAusbeute 65,4 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418397
HCID 178418397, Verbindung
Katalysator
HCID 66808090Toluene-methanol waterLösungsmittel

Versuchsvorschrift

(4-Bromophenyl)methanol (5.00 g, 32 mmol), (2,6-dimethylphenyl)boronic acid (5.77 g, 39 mmol) and sodium carbonate (10.2 g, 96 mmol) were dissolved in toluene-methanol-water (5:1:1, 210 mL) and, after argon substitution, tetrakistriphenylphosphinepalladium (1.85 g, 1.6 mmol) was added. The reaction mixture was heated under reflux overnight under an argon atmosphere. The reaction mixture was cooled, water was added to the reaction mixture and the mixture was extracted with ethyl acetate. The extract was washed with water, dried and concentrated. The residue was purified by silica gel column chromatography (hexane/ethyl acetate=7:3) to give the title compound (4.44 g, yield 65%) as a white powder.

Aufarbeitung

  1. temperatureThe reaction mixture was heated
  2. temperatureunder reflux overnight under an argon atmosphere
  3. temperatureThe reaction mixture was cooled
  4. extractionthe mixture was extracted with ethyl acetate
  5. washThe extract was washed with water
  6. customdried
  7. concentrationconcentrated
  8. customThe residue was purified by silica gel column chromatography (hexane/ethyl acetate=7:3)

Quellen und Nachweise

ORD-Eintrag
ord-f0e51cde3e484437aca25064bbd1e0fb
Quelldatensatz
uspto-grants-2011_06
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07960369B2

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