Reaktion #1344648

ord-56a7a59b894a44d3bd71a45abb9efdcf

Reaktionsbedingungen

Temperatur
90°CELSIUS
Detaillierte Bedingungen
See reaction.notes.procedure_details.

Aufarbeitung

  1. 1
    FiltrationThe resulting salt was filtered
  2. 2
    Sonstigeremoved
  3. 3
    Sonstigethe solvent was evaporated under reduced pressure
  4. 4
    SonstigeThe obtained crude product
  5. 5
    Sonstigewas purified by column chromatography (hexane-hexane/ethyl acetate=60/40)

Vorschrift

To a mixed solution of the compound (900 mg, 4.6 mmol) obtained in Example 30a, 2-benzyloxyphenylboronic acid (1.3 g, 5.6 mmol) and 2M aqueous sodium carbonate solution (2.8 mL, 5.6 mmol) in 1,2-dimethoxyethane-ethanol (v/v=3/1, 12 mL) was added [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II) dichloromethane complex (380 mg, 0.46 mmol), and the mixture was stirred at 90° C. overnight. The resulting salt was filtered and removed, and the solvent was evaporated under reduced pressure. The obtained crude product was purified by column chromatography (hexane-hexane/ethyl acetate=60/40) to give the title compound (1.2 g, 88%) as colorless crystals.

Quelle

DOI: 10.6084/m9.figshare.5104873.v1Patent: US08461348B2uspto-grants-2013_06