Acetic Anhydride → 3-Methyl-8-acetoxy-5,6,7,8-tetrahydroquinoline

HRID 1638581노트

반응식

HRID 1638581 반응식
[CH3:1][C:2]1[CH:3]=[N+:4]([O-])[C:5]2[CH2:6][CH2:7][CH2:8][CH2:9][C:10]=2[CH:11]=1.[C:13]([O:16]C(=O)C)(=[O:15])[CH3:14]>>[CH3:1][C:2]1[CH:3]=[N:4][C:5]2[CH:6]([O:16][C:13](=[O:15])[CH3:14])[CH2:7][CH2:8][CH2:9][C:10]=2[CH:11]=1

참가 물질

3

반응물 2

HCID 7918Acetic AnhydrideHCID 123582463-Methyl-1-oxo-5,6,7,8-tetrahydro-1lambda~5~-quinoline

생성물 1

HCID 123582473-Methyl-8-acetoxy-5,6,7,8-tetrahydroquinoline

반응 조건

온도
90 °C

실험 절차

7.02 Grams of 3-methyl-5,6,7,8-tetrahydroquinoline-N-oxide was dissolved in acetic anhydride, and the solution was heated at 90° C. with stirring for 3.5 hours. Acetic anhydride was removed by evaporation under reduced pressure, then an aqueous solution of sodium carbonate was added to make the residue alkaline and was extracted with chloroform. The chloroform layer was washed with an aqueous solution saturated with sodium chloride, then dried with anhydrous magnesium sulfate. The solvent was removed by evaporation, and the residue thus obtained was purified by a silica gel column chromatography (eluent:dichloromethane) to obtain 7.18 g of 3-methyl-8-acetoxy-5,6,7,8-tetrahydroquinoline.

후처리

  1. customAcetic anhydride was removed by evaporation under reduced pressure
  2. additionan aqueous solution of sodium carbonate was added
  3. extractionwas extracted with chloroform
  4. washThe chloroform layer was washed with an aqueous solution saturated with sodium chloride
  5. dry with materialdried with anhydrous magnesium sulfate
  6. customThe solvent was removed by evaporation
  7. customthe residue thus obtained
  8. customwas purified by a silica gel column chromatography (eluent:dichloromethane)

출처 및 근거

ORD 기록
ord-7198412caf084f6294a840f141dc0349
출처 데이터셋
uspto-grants-1989_11
특허 번호
US04880815

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