Triethylamine → 4,5-Dihydro-5-(4-nitrobenzoyl)pyrrolo[1,2-a]quinoxaline

HRID 3526

반응식

HRID 3526 반응식
[CH:1]1[N:5]2[C:6]3[C:11]([NH:12][CH2:13][C:4]2=[CH:3][CH:2]=1)=[CH:10][CH:9]=[CH:8][CH:7]=3.C(N(CC)CC)C.[N+:21]([C:24]1[CH:32]=[CH:31][C:27]([C:28](Cl)=[O:29])=[CH:26][CH:25]=1)([O-:23])=[O:22]>C(Cl)Cl.C(OCC)(=O)C>[N+:21]([C:24]1[CH:25]=[CH:26][C:27]([C:28]([N:12]2[C:11]3[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=3)[N:5]3[CH:1]=[CH:2][CH:3]=[C:4]3[CH2:13]2)=[O:29])=[CH:31][CH:32]=1)([O-:23])=[O:22]

참가 물질

6

반응물 3

HCID 8471TriethylamineHCID 85024-Nitrobenzoyl chlorideHCID 118051814,5-Dihydropyrrolo[1,2-a]quinoxaline

생성물 1

HCID 218371354,5-Dihydro-5-(4-nitrobenzoyl)pyrrolo[1,2-a]quinoxaline

시약·촉매·용매 2

HCID 6344Dichloromethane용매2회HCID 8857Ethyl Acetate용매

실험 절차

To a solution of 5 mmol of 4,5-dihydropyrrolo[1,2-a]quinoxaline in 50 ml of methylene chloride under argon is added 10 mmol of triethylamine followed by ice bath cooling. A solution of 5 mmol of 4-nitrobenzoyl chloride in 10 ml of methylene chloride is added dropwise. Following complete addition, the ice bath is removed and the reaction mixture stirred at room temperature for 2 hours. The volatiles are removed in vacuo to give a residue which is dissolved in ethyl acetate. The solution is washed with water, 1N HCl, NaHCO3, and brine. The reaction mixture is dried with Na2SO4, filtered and evaporated in vacuo to give a solid which is purified by flash chromatography to give the desired product (from ethyl acetate) as a solid, m.p. 174°-178° C.

후처리

  1. customfollowed by ice bath
  2. temperaturecooling
  3. additionaddition
  4. customthe ice bath is removed
  5. customThe volatiles are removed in vacuo
  6. customto give a residue which
  7. washThe solution is washed with water, 1N HCl, NaHCO3, and brine
  8. dry with materialThe reaction mixture is dried with Na2SO4
  9. filtrationfiltered
  10. customevaporated in vacuo
  11. customto give a solid which
  12. customis purified by flash chromatography

출처 및 근거

ORD 기록
ord-753e4a858f2c476d8ba39b9fa7affcdf
출처 데이터셋
uspto-grants-1998_03
특허 번호
US05733905

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