Reaktion #727273

ord-35fa0f5cf1f642a79dbe403b76a8711f

Lösungsmittel

Reaktionsbedingungen

Temperatur
0°CELSIUS
Detaillierte Bedingungen
See reaction.notes.procedure_details.

Aufarbeitung

  1. 1
    Sonstigeat 0° C
  2. 2
    workup.STIRRINGThis mixture was stirred for 40 minutes at room temperature
  3. 3
    workup.STIRRINGstirred for 25 minutes at 70° C
  4. 4
    SonstigeThe reaction solution was partitioned into water and ethyl acetate at 0° C
  5. 5
    WaschenThe organic layer was washed with water and saturated aqueous sodium chloride
  6. 6
    Trocknendried over anhydrous magnesium sulfate
  7. 7
    Sonstigethe solvent was evaporated under a reduced pressure
  8. 8
    SonstigeThe residue was purified by silica gel column chromatography (heptane:ethyl acetate=20:1)

Vorschrift

To a solution of 4-bromobenzyl alcohol (10.0 g, 53.5 mmol) in N,N-dimethylformamide (200 mL) was added sodium hydride (3.08 g, 64.2 mmol, 50% in oil) at 0° C. This mixture was stirred for 5 minutes at 0° C., and 1-bromobutane (7.47 mL, 69.3 mmol) was added thereto at 0° C. This mixture was stirred for 40 minutes at room temperature and then stirred for 25 minutes at 70° C. The reaction solution was partitioned into water and ethyl acetate at 0° C. The organic layer was washed with water and saturated aqueous sodium chloride, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under a reduced pressure. The residue was purified by silica gel column chromatography (heptane:ethyl acetate=20:1) to obtain the title compound (11.5 g, 89%).

Quelle

DOI: 10.6084/m9.figshare.5104873.v1Patent: US07691882B2uspto-grants-2010_04