Water → 2-(1-Benzylpiperidin-4-yl)-1-(2-fluorophenyl)ethanol

HRID 890017Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 890017
Br[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[F:8].C([Li])CCC.[CH2:14]([N:21]1[CH2:26][CH2:25][CH:24]([CH2:27][CH:28]=[O:29])[CH2:23][CH2:22]1)[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1.O>O1CCCC1>[CH2:14]([N:21]1[CH2:26][CH2:25][CH:24]([CH2:27][CH:28]([C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=2[F:8])[OH:29])[CH2:23][CH2:22]1)[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1

Komponenten

6

Edukt 4

HCID 962WaterHCID 612591-Bromo-2-fluorobenzeneHCID 100136024-Piperidineacetaldehyde, 1-(phenylmethyl)-HCID 178418339Butyllithium

Produkt 1

HCID 222478782-(1-Benzylpiperidin-4-yl)-1-(2-fluorophenyl)ethanolAusbeute 60 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel2×

Reaktionsbedingungen

Temperatur
-78 °C

Versuchsvorschrift

After dissolving 1.64 ml of 1-bromo-2-fluorobenzene in 30 ml of tetrahydrofuran, the solution was cooled to −78° C. Next, 5.31 ml of n-butyllithium (2.6 M, n-hexane solution) was added dropwise while stirring, and after 1 hour, a solution of 2.50 g of 1-benzyl-4-piperidineacetaldehyde [CAS No.120014-32-6] in tetrahydrofuran (10 ml) was added and stirring was continued for 1 hour. After adding water to the reaction solution, the temperature was raised to room temperature and extraction was performed with ethyl acetate. The organic layer was washed With water and saturated brine in that order and dried over anhydrous magnesium sulfate, and then the solvent was distilled off under reduced pressure. The residue was purified by NH silica gel column chromatography (solvent: n-hexane/ethyl acetate) to obtain the title compound (2.15 g, 60% yield).

Aufarbeitung

  1. stirringstirring
  2. waitwas continued for 1 hour
  3. temperaturethe temperature was raised to room temperature
  4. extractionextraction
  5. washThe organic layer was washed With water and saturated brine in that order
  6. dry with materialdried over anhydrous magnesium sulfate
  7. distillationthe solvent was distilled off under reduced pressure
  8. customThe residue was purified by NH silica gel column chromatography (solvent: n-hexane/ethyl acetate)

Quellen und Nachweise

ORD-Eintrag
ord-8d41ef437af04969813f67d0d0e0dc40
Quelldatensatz
uspto-grants-2006_02
Patentnummer
US06995144B2

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