Ethyl 1-cyclopropyl-6,7-difluoro-1,2,3,4-tetrahydro-8-methoxy-5-nitro-4-oxo-2-phenylquinoline-3-carboxylate → Ethyl 1-cyclopropyl-6,7-difluoro-1,4-dihydro-8-methoxy-5-nitro-4-oxo-2-phenylquinoline-3-carboxylate

HRID 561152Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 561152
[CH:1]1([N:4]2[C:13]3[C:8](=[C:9]([N+:18]([O-:20])=[O:19])[C:10]([F:17])=[C:11]([F:16])[C:12]=3[O:14][CH3:15])[C:7](=[O:21])[CH:6]([C:22]([O:24][CH2:25][CH3:26])=[O:23])[CH:5]2[C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=2)[CH2:3][CH2:2]1>C(Cl)Cl.[O-2].[O-2].[Mn+4]>[CH:1]1([N:4]2[C:13]3[C:8](=[C:9]([N+:18]([O-:20])=[O:19])[C:10]([F:17])=[C:11]([F:16])[C:12]=3[O:14][CH3:15])[C:7](=[O:21])[C:6]([C:22]([O:24][CH2:25][CH3:26])=[O:23])=[C:5]2[C:27]2[CH:28]=[CH:29][CH:30]=[CH:31][CH:32]=2)[CH2:2][CH2:3]1

Komponenten

4

Edukt 1

HCID 66999747Ethyl 1-cyclopropyl-6,7-difluoro-1,2,3,4-tetrahydro-8-methoxy-5-nitro-4-oxo-2-phenylquinoline-3-carboxylate

Produkt 1

HCID 59002827Ethyl 1-cyclopropyl-6,7-difluoro-1,4-dihydro-8-methoxy-5-nitro-4-oxo-2-phenylquinoline-3-carboxylateAusbeute 41 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418406HCID 178418406, VerbindungKatalysatorHCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

A suspension of ethyl 1-cyclopropyl-6,7-difluoro-1,2,3,4-tetrahydro-8-methoxy-5-nitro-4-oxo-2-phenylquinoline-3-carboxylate (2.60 g, 5.82 mmol) and manganese dioxide (39.0 g, 449 mmol) in CH2Cl2 (60 mL) was stirred at room temperature for 16 h. The catalyst was removed by filtration over Celite and the filtrate was concentrated in vacuo. The crude product was purified by column chromatography (Hexane:EtOAc 5:1→1:1) to yield ethyl 1-cyclopropyl-6,7-difluoro-1,4-dihydro-8-methoxy-5-nitro-4-oxo-2-phenylquinoline-3-carboxylate (1.05 g, 41%) as a colorless solid.

Aufarbeitung

  1. customThe catalyst was removed by filtration over Celite
  2. concentrationthe filtrate was concentrated in vacuo
  3. customThe crude product was purified by column chromatography (Hexane:EtOAc 5:1→1:1)

Quellen und Nachweise

ORD-Eintrag
ord-042734fb855144858b9fd0c3abd997db
Quelldatensatz
uspto-grants-2011_11
Patentnummer
US08063221B2

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