Reaktion #499774

ord-d0bb90e8a4ee4972b905d3ee714a4f3b

Lösungsmittel

Reaktionsbedingungen

Detaillierte Bedingungen
See reaction.notes.procedure_details.

Aufarbeitung

  1. 1
    SonstigeAfter completion of the reaction
  2. 2
    Sonstigethe solvent was evaporated
  3. 3
    Sonstigethe obtained residue was separated by HPLC (0.05% aqueous trifluoroacetic acid:methanol=1:1)
  4. 4
    workup.ADDITIONThe obtained residue was treated with hydrogen chloride-ethanol
  5. 5
    Sonstigedried under reduced pressure

Vorschrift

A solution of 4-(2-amidino-8-chloronaphthalen-7-yloxymethyl)-1-(pyridin-4-yl)piperidine-4-carboxylic acid ethyl ester dihydrochloride (78 mg) in conc. hydrochloric acid was stirred at 50° C.-100° C. for 3 hours. After completion of the reaction, the solvent was evaporated and the obtained residue was separated by HPLC (0.05% aqueous trifluoroacetic acid:methanol=1:1). The obtained residue was treated with hydrogen chloride-ethanol and dried under reduced pressure to give the title compound (49 mg).

Quelle

DOI: 10.6084/m9.figshare.5104873.v1Patent: US06562828B1uspto-grants-2003_05