Dimethylformamide → Ethyl 2-[(1-ethylimidazol-2-yl)thiomethyl]-6,7-dimethoxy-4-(3,4-dimethoxyphenyl)quinoline-3-carboxylate

HRID 617218Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 617218
Cl[CH2:2][C:3]1[C:12]([C:13]([O:15][CH2:16][CH3:17])=[O:14])=[C:11]([C:18]2[CH:23]=[CH:22][C:21]([O:24][CH3:25])=[C:20]([O:26][CH3:27])[CH:19]=2)[C:10]2[C:5](=[CH:6][C:7]([O:30][CH3:31])=[C:8]([O:28][CH3:29])[CH:9]=2)[N:4]=1.[CH2:32]([N:34]1[CH:38]=[CH:37][N:36]=[C:35]1[SH:39])[CH3:33].C(=O)([O-])[O-].[K+].[K+].CN(C)C=O>O>[CH2:32]([N:34]1[CH:38]=[CH:37][N:36]=[C:35]1[S:39][CH2:2][C:3]1[C:12]([C:13]([O:15][CH2:16][CH3:17])=[O:14])=[C:11]([C:18]2[CH:23]=[CH:22][C:21]([O:24][CH3:25])=[C:20]([O:26][CH3:27])[CH:19]=2)[C:10]2[C:5](=[CH:6][C:7]([O:30][CH3:31])=[C:8]([O:28][CH3:29])[CH:9]=2)[N:4]=1)[CH3:33]

Komponenten

6

Edukt 4

HCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 10813243Ethyl 2-chloromethyl-4-(3,4-dimethoxyphenyl)-6,7-dimethoxyquinoline-3-carboxylateHCID 1784626451-ethyl-1H-imidazole-2-thiol

Produkt 1

HCID 10626209Ethyl 2-[(1-ethylimidazol-2-yl)thiomethyl]-6,7-dimethoxy-4-(3,4-dimethoxyphenyl)quinoline-3-carboxylateAusbeute 78 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

A mixture of ethyl 2-chloromethyl-6,7-dimethoxy-4- (3,4-dimethoxyphenyl)quinoline-3-carboxylate (3.0 g), 1-ethyl-2-mercaptoimidazole (1.0 g), potassium carbonate (1.1 g) and N,N-dimethylformamide (30 ml) was stirred at room temperature for 3 hours. The reaction mixture was poured into water and extracted with ethyl acetate. The ethyl acetate layer 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 (3:2, v/v), ethyl 2-[(1-ethylimidazol-2-yl)thiomethyl]-6,7- dimethoxy-4-(3,4-dimethoxyphenyl)quinoline-3-carboxylate (2.8 g, 78%) was obtained and recrystallized from ethyl acetate/hexane.

Aufarbeitung

  1. extractionextracted with ethyl acetate
  2. washThe ethyl acetate layer 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 (3:2

Quellen und Nachweise

ORD-Eintrag
ord-a1599e6f9f05492f887c8b46e2121cd3
Quelldatensatz
uspto-grants-1999_09
Patentnummer
US05948782

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