Reaktion #2182475

ord-51e4dfb8825d49a8951b33a5e245b99b

Reaktionsbedingungen

Temperatur
125°CELSIUS
Detaillierte Bedingungen
See reaction.notes.procedure_details.

Aufarbeitung

  1. 1
    Temperaturat reflux overnight
  2. 2
    EinengenThe mixture was concentrated under vacuum
  3. 3
    Sonstigethe residue was partitioned between ethyl acetate (200 ml) and water (60 ml)
  4. 4
    WaschenThe organic phase was washed with brine
  5. 5
    Trocknendried over Na2SO4
  6. 6
    SonstigeConcentration of the solvent gave crude product which
  7. 7
    EinengenThe mixture was concentrated
  8. 8
    workup.DISSOLUTIONthe residue was dissolved in dimethylsulfoxide/methanol (1/1, 2 ml)
  9. 9
    Sonstigeloaded on HPLC for purification

Vorschrift

To a mixture of EXAMPLE 581D (232 mg) in N, N-dimethylamide (10 ml) was added NaN3 (281 mg) and NH4Cl (231 mg). The mixture was stirred at reflux overnight. The mixture was concentrated under vacuum and the residue was partitioned between ethyl acetate (200 ml) and water (60 ml). The organic phase was washed with brine and dried over Na2SO4. Concentration of the solvent gave crude product which was dissolved in dichloromethane/trifluoroacetic acid (1:1, 4 ml) and heated to 125° C. in a microwave (CEM Discover) for 20 minutes. The mixture was concentrated and the residue was dissolved in dimethylsulfoxide/methanol (1/1, 2 ml) and loaded on HPLC for purification. 1H NMR (300 MHz, DMSO-d6) δ 10.63 (m, 1H), 8.26 (m, 1H), 7.86 (m, 1H), 7.74 (d, 1H), 7.53 (m, 2H), 7.42 (m, 5H), 7.33 (m, 2H), 7.11 (m, 3H), 6.90 (d, 1H), 4.23 (t, 2H), 2.29 (m, 2H), 2.13 (s, 3H).

Quelle

DOI: 10.6084/m9.figshare.5104873.v1Patent: US08445679B2uspto-grants-2013_05