Reacción #2339836

ord-ab38fd919bbe41b688208f54298c7a37

Disolventes

Condiciones de reacción

Condiciones detalladas
See reaction.notes.procedure_details.

Tratamiento posterior

  1. 1
    OtroAfter removal of the catalyst
  2. 2
    Filtraciónby filtration
  3. 3
    Otrothe solution was evaporated in vacuo to a pale yellow HCl salt of the product
  4. 4
    OtroThe free base is obtained
  5. 5
    ExtracciónThe aqueous is then extracted with Et2O several times
  6. 6
    Secadothe extracts dried (MgSO4)
  7. 7
    Otroevaporated to an oil

Procedimiento

2-Phenylpyridine, Intermediate 14, (4.0 g, 25.81 mmol), and concentrated HCl (3 mL) in EtOH (15 mL) were treated with platinum oxide and subjected to catalytic hydrogenation (˜1 atm, balloon), at room temperature for 72 hours. After removal of the catalyst by filtration, the solution was evaporated in vacuo to a pale yellow HCl salt of the product. The free base is obtained by treating the residue with 10% aqueous sodium hydroxide. The aqueous is then extracted with Et2O several times and the extracts dried (MgSO4) and evaporated to an oil to give the title compound.

Fuente

DOI: 10.6084/m9.figshare.5104873.v1Patente: US07323464B2uspto-grants-2008_01