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Azobisisobutyronitrile → Ethyl 2-bromomethyl-4-(3,4-dimethoxyphenyl)-6,7-dimethoxyquinoline-3-carboxylate

HRID 617213
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HRID 617213 반응식
[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][C:12]=1[O:13][CH3:14])[N:9]=[C:8]([CH3:15])[C:7]([C:16]([O:18][CH2:19][CH3:20])=[O:17])=[C:6]2[C:21]1[CH:26]=[CH:25][C:24]([O:27][CH3:28])=[C:23]([O:29][CH3:30])[CH:22]=1.[Br:31]N1C(=O)CCC1=O.N(C(C)(C)C#N)=NC(C)(C)C#N>C(Cl)(Cl)(Cl)Cl>[Br:31][CH2:15][C:8]1[C:7]([C:16]([O:18][CH2:19][CH3:20])=[O:17])=[C:6]([C:21]2[CH:26]=[CH:25][C:24]([O:27][CH3:28])=[C:23]([O:29][CH3:30])[CH:22]=2)[C:5]2[C:10](=[CH:11][C:12]([O:13][CH3:14])=[C:3]([O:2][CH3:1])[CH:4]=2)[N:9]=1
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참가 물질

5

반응물 3

HCID 6547AzobisisobutyronitrileHCID 67184N-bromobutanimideHCID 19032371Ethyl 4-(3,4-dimethoxyphenyl)-6,7-dimethoxy-2-methylquinoline-3-carboxylate

생성물 1

HCID 21851143Ethyl 2-bromomethyl-4-(3,4-dimethoxyphenyl)-6,7-dimethoxyquinoline-3-carboxylate수율 58.2%

시약·촉매·용매 1

HCID 5943Carbon Tetrachloride
용매

실험 절차

A mixture of ethyl 6,7-dimethoxy-4-(3,4-dimethoxyphenyl)-2-methylquinoline-3-carboxylate (411 mg), N-bromosuccinimide (NBS) (214 mg), 2,2'-azobis(isobutyronitrile) (10 mg) and carbon tetrachloride (10 ml) was stirred under reflux for 5 hours. The reaction mixture was washed with water and dried (MgSO4), and the solvent was distilled off under reduced pressure. The residue was subjected to column chromatography on silica gel. From the fraction eluted with chloroform/ethyl acetate (10:1, v/v), ethyl 2-bromomethyl-6,7-dimethoxy-4-(3,4-dimethoxyphenyl)quinoline-3-carboxylate (285 mg, 58%) was obtained and recrystallized from ethyl acetate/hexane.

후처리

  1. temperatureunder reflux for 5 hours
  2. washThe reaction mixture was washed with water
  3. dry with materialdried (MgSO4)
  4. distillationthe solvent was distilled off under reduced pressure
  5. washFrom the fraction eluted with chloroform/ethyl acetate (10:1

출처 및 근거

ORD 기록
ord-a03ff6768cd6433995b2782449e23628
출처 데이터셋
uspto-grants-1999_09
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US05948782

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