반응 #1924609

ord-f1ddfad65a8440ba925054a0079cf581

용매

반응 조건

온도
0°CELSIUS
상세 조건
See reaction.notes.procedure_details.

후처리

  1. 1
    workup.STIRRINGthe reaction mixture stirred at 0° C. for 4 h
  2. 2
    세척washed with water
  3. 3
    추출the organic layer extracted into hexane/ethyl acetate (3×30 ml, 1:1)
  4. 4
    세척The combined extracts were washed with brine
  5. 5
    기타dried (MgS04)
  6. 6
    기타the solvent removed in vacuo
  7. 7
    기타to yield colorless oil
  8. 8
    기타The crude product was purified by column chromatography [silica gel eluted with hexane/ethyl acetate (4:1)]
  9. 9
    기타to yield a colorless oil

실험 절차

Monochloroborane-methyl sulfide (1.10 ml, 1.16 g, 10.5 mmol) was added dropwise to a stirred, cooled (0° C.) solution of compound 9 (2.56 g, 10.0 mmol) in THF (30 ml). The reaction mixture was stirred at 0° C. for 24 h, and a solution of hydrogen peroxide (10 ml, 30% in water) added dropwise and the reaction mixture stirred at 0° C. for 4 h, washed with water and the organic layer extracted into hexane/ethyl acetate (3×30 ml, 1:1). The combined extracts were washed with brine, dried (MgS04) and the solvent removed in vacuo to yield colorless oil. The crude product was purified by column chromatography [silica gel eluted with hexane/ethyl acetate (4:1)] to yield a colorless oil.

출처

DOI: 10.6084/m9.figshare.5104873.v1특허: US06783812B2uspto-grants-2004_08