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

HRID 1468563ノート

反応式

HRID 1468563 の反応式
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]

参加物

5

反応物 3

HCID 3776Isopropanol2 回HCID 86593935Acetic acid 7-(tert-butyl-dimethyl-silanyloxy)-hept-2-ynyl esterHCID 131709961Jones' reagent

生成物 1

HCID 219644197-Acetoxy-hept-5-ynoic acid

試薬・触媒・溶媒 1

HCID 180Acetone溶媒

実験手順

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.

後処理

  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

出典と根拠

ORDレコード
ord-78c89e153c2e436487c4b5a91ad97481
出典データセット
uspto-grants-2015_04
特許番号
US09005605B2

反応ノート

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