Sodium Acetate → 1-Cyclopropyl-6,8-difluoro-1,4-dihydro-7-(2,6-dimethyl-4-pyridinyl)-4-oxo-3-quinolinecarboxyic acid

HRID 1461386Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1461386
[CH:1]1([N:4]2[C:13]3[C:8](=[CH:9][C:10]([F:23])=[C:11]([C:15]4[CH:20]=[C:19]([CH3:21])[N:18]=[C:17]([CH3:22])[CH:16]=4)[C:12]=3[F:14])[C:7](=[O:24])[C:6]([C:25]([O:27]CC)=[O:26])=[CH:5]2)[CH2:3][CH2:2]1.C([O-])(=O)C.[Na+]>Cl>[CH:1]1([N:4]2[C:13]3[C:8](=[CH:9][C:10]([F:23])=[C:11]([C:15]4[CH:20]=[C:19]([CH3:21])[N:18]=[C:17]([CH3:22])[CH:16]=4)[C:12]=3[F:14])[C:7](=[O:24])[C:6]([C:25]([OH:27])=[O:26])=[CH:5]2)[CH2:3][CH2:2]1

Komponenten

4

Edukt 2

HCID 517045Sodium AcetateHCID 9978175HCID 9978175, Verbindung

Produkt 1

HCID 1300781-Cyclopropyl-6,8-difluoro-1,4-dihydro-7-(2,6-dimethyl-4-pyridinyl)-4-oxo-3-quinolinecarboxyic acidAusbeute 75,3 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 313Hydrochloric AcidLösungsmittel

Versuchsvorschrift

A suspension of 1.0 g ethyl 1-cyclopropyl-6,8-difluoro-7-(2,6-dimethyl-4-pyridinyl)-1,4-dihydro-4-oxo-3-quinolinecarboxylate in 20 ml 1M hydrochloric acid was heated at reflux for 2 hours. The reaction mixture was cooled, poured into saturated sodium acetate and extracted with ethyl acetate. The extract was dried (sodium sulfate) and concentrated, and the residue (0.84 g) was recrystallized from absolute ethanol to give 0.70 g 1-cyclopropyl-6,8-difluoro-7-(2,6-dimethyl-4-pyridinyl)-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid, colorless needles, m.p. 246°-248.5° C.

Aufarbeitung

  1. temperaturewas heated
  2. temperatureat reflux for 2 hours
  3. temperatureThe reaction mixture was cooled
  4. extractionextracted with ethyl acetate
  5. dry with materialThe extract was dried (sodium sulfate)
  6. concentrationconcentrated
  7. customthe residue (0.84 g) was recrystallized from absolute ethanol

Quellen und Nachweise

ORD-Eintrag
ord-4d5f22cb6b764c98926835330a5d690a
Quelldatensatz
uspto-grants-1991_12
Patentnummer
US05075319

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