Reaktion #435921

ord-578dfb8d54cd4da795aa036e4afe7592

Lösungsmittel

Reaktionsbedingungen

Detaillierte Bedingungen
See reaction.notes.procedure_details.

Aufarbeitung

  1. 1
    SonstigeAfter completion of the reaction
  2. 2
    workup.DISTILLATIONthe solvent was distilled off
  3. 3
    Sonstigethe residue was then purified through silica gel column chromatography (hexane/ethyl acetate)

Vorschrift

The compound (453 mg) obtained in Example 121-9 was added with triphenylphosphine (516 mg) and phthalimide (245 mg), and then dissolved in anhydrous THF (10 ml). The solution was added with a 40% diethylazodicarboxylate/toluene solution (0.892 ml) in an ice bath and stirred at room temperature for 2 hours under a nitrogen atmosphere. After completion of the reaction, the solvent was distilled off and the residue was then purified through silica gel column chromatography (hexane/ethyl acetate), thereby obtaining the subject compound (439 mg) as a white solid.

Quelle

DOI: 10.6084/m9.figshare.5104873.v1Patent: US07176227B2uspto-grants-2007_02