Isopropanol → 7-Acetoxy-hept-5-ynoic acid

HRID 1395880노트

반응식

HRID 1395880 반응식
C([Si](C)(C)[O:6][CH2:7][CH2:8][CH2:9][CH2:10][C:11]#[C:12][CH2:13][O:14][C:15](=[O:17])[CH3:16])(C)(C)C.CC(C)=[O:22].OS(O)(=O)=O.O=[Cr](=O)=O.C(O)(C)C>CC(C)=O>[C:15]([O:14][CH2:13][C:12]#[C:11][CH2:10][CH2:9][CH2:8][C:7]([OH:6])=[O:22])(=[O:17])[CH3:16]

참가 물질

5

반응물 3

HCID 3776Isopropanol2회HCID 86593935Acetic acid 7-(tert-butyl-dimethyl-silanyloxy)-hept-2-ynyl esterHCID 131709961Jones' reagent

생성물 1

HCID 219644197-Acetoxy-hept-5-ynoic acid

시약·촉매·용매 1

HCID 180Acetone용매

실험 절차

A solution of crude (28) in acetone (100 mL) was treated with Jones Reagent (18.0 mL, 41.4 mmol, 2.3 M) and cooled with an ice bath. After 1 hour at room temperature, 10 mL isopropyl alcohol was added and the mixture stirred for 15 minutes. The mixture still had a brown color so another 10 mL isopropyl alcohol was added. After another 15 minutes, the color had not changed so the mixture was filtered through celite and the filtrate evaporated in vacuo. The residue was partitioned between 100 mL ether and 100 mL saturated ammonium chloride solution. The aqueous layer was extracted with 100 mL ether and the combined ether solution washed with brine and then dried (MgSO4), filtered and evaporated to leave a yellow oil (6.333 g) that was used directly in the next step.

후처리

  1. temperaturecooled with an ice bath
  2. additionwas added
  3. waitAfter another 15 minutes
  4. filtrationwas filtered through celite
  5. customthe filtrate evaporated in vacuo
  6. customThe residue was partitioned between 100 mL ether and 100 mL saturated ammonium chloride solution
  7. extractionThe aqueous layer was extracted with 100 mL ether
  8. washthe combined ether solution washed with brine
  9. dry with materialdried (MgSO4)
  10. filtrationfiltered
  11. customevaporated

출처 및 근거

ORD 기록
ord-06d79cabeaef442580029323fef4e595
출처 데이터셋
uspto-grants-2014_12
특허 번호
US08900571B2

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