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Bromo(phenyl)acetic acid → 2-Bromo-2-phenylethanol

HRID 34833
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 34833
[Br:1][CH:2]([C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1)[C:3](O)=[O:4].B#B.O1CCCC1.O>O1CCCC1>[Br:1][CH:2]([C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1)[CH2:3][OH:4]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

5

Edukt 3

HCID 97919Bromo(phenyl)acetic acidHCID 6328200DiboronHCID 21881883Oxolane--water (1/1)

Produkt 1

HCID 5783322-Bromo-2-phenylethanol

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel2×

Versuchsvorschrift

To a stirred solution of 25 g of α-bromphenylacetic acid in 100 ml of dry tetrahydrofuran was added 151 ml of 1.0M diborane in tetrahydrofuran dropwise at 5° C. under argon over 30 minutes. This mixture was stirred overnight at room temperature, then cooled to 0° C. and 130 ml of tetrahydrofuran:water (1:1) was added dropwise. The mixture was then saturated with potassium carbonate and the tetrahydrofuran removed. The aqueous remainder was extracted three times with ether. The extracts were combined and dried. The residue was triturated with hexane and the solid collected giving the desired compound as white needles, mp 38°-39° C.

Aufarbeitung

  1. temperaturecooled to 0° C.
  2. customsaturated with potassium carbonate and the tetrahydrofuran removed
  3. extractionThe aqueous remainder was extracted three times with ether
  4. customdried
  5. customThe residue was triturated with hexane
  6. customthe solid collected

Quellen und Nachweise

ORD-Eintrag
ord-b0f3831dca3c442fb30e53f98498613d
Quelldatensatz
uspto-grants-1988_08
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US04762942

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