반응 #8920

ord-ba1760b26e374dbd82c6ff5fe2302808

용매

반응 조건

온도
150°CELSIUS
상세 조건
See reaction.notes.procedure_details.

후처리

  1. 1
    기타was placed in a 10 mL reaction tube of a CEM Corporation Discover 300 Watt microwave reactor
  2. 2
    기타The reaction vessel was sealed
  3. 3
    온도After the reaction vessel had cooled again to room temperature
  4. 4
    기타the reaction mixture was partitioned between EtOAc and saturated aqueous NaHCO3 solution
  5. 5
    기타The organic layer was separated
  6. 6
    세척washed with aq. NaHCO3, brine
  7. 7
    건조dried (Na2SO4)
  8. 8
    여과filtered
  9. 9
    기타evaporated
  10. 10
    기타The residue was purified on a silica gel flash chromatography column
  11. 11
    세척eluted with 0–75% EtOAc-hexane
  12. 12
    기타Evaporation of the purified fractions
  13. 13
    기타drying in vacuo

실험 절차

A mixture of 0.094 g (0.18 mmol) of the product of Step B and 0.027 g (0.18 mmol) of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) in 2 mL DMF was placed in a 10 mL reaction tube of a CEM Corporation Discover 300 Watt microwave reactor. The reaction vessel was sealed, placed in the microwave reactor and heated at 150° C. for 5 min. After the reaction vessel had cooled again to room temperature, the reaction mixture was partitioned between EtOAc and saturated aqueous NaHCO3 solution. The organic layer was separated, washed with aq. NaHCO3, brine, dried (Na2SO4), filtered and evaporated. The residue was purified on a silica gel flash chromatography column eluted with 0–75% EtOAc-hexane. Evaporation of the purified fractions and drying in vacuo afforded the title compound. HPLC/MS: 504.2 (M+1), 506.0 (M+3); Rt=3.39 min.

출처

DOI: 10.6084/m9.figshare.5104873.v1특허: US07091216B2uspto-grants-2006_08