3-Bromo-4-fluorobenzaldehyde → 2-benzyl-5-(3-bromo-4-fluorophenyl)-2,3,5,7,8,9-hexahydro-1H-cyclopenta[b][1,7]naphthyridine-4,6-dione

HRID 478261Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 478261
[NH2:1][C:2]1[CH2:6][CH2:5][C:4](=[O:7])[CH:3]=1.[Br:8][C:9]1[CH:10]=[C:11]([CH:14]=[CH:15][C:16]=1[F:17])[CH:12]=O.[CH2:18]([N:25]1[CH2:30][C:29](=O)[CH2:28][C:27](=[O:32])[CH2:26]1)[C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1>C(O)C>[CH2:18]([N:25]1[CH2:30][C:29]2[NH:1][C:2]3[CH2:6][CH2:5][C:4](=[O:7])[C:3]=3[CH:12]([C:11]3[CH:14]=[CH:15][C:16]([F:17])=[C:9]([Br:8])[CH:10]=3)[C:28]=2[C:27](=[O:32])[CH2:26]1)[C:19]1[CH:20]=[CH:21][CH:22]=[CH:23][CH:24]=1

Komponenten

5

Edukt 3

HCID 1736043-Bromo-4-fluorobenzaldehydeHCID 111381741-Benzylpiperidine-3,5-dioneHCID 122914403-Aminocyclopent-2-en-1-one

Produkt 1

HCID 113288132-benzyl-5-(3-bromo-4-fluorophenyl)-2,3,5,7,8,9-hexahydro-1H-cyclopenta[b][1,7]naphthyridine-4,6-dioneAusbeute 64,2 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 702EthanolLösungsmittel

Versuchsvorschrift

A solution of 3-amino-2-cyclopenten-1-one (Kikani, B. B., Synthesis, (1991), 2, 176) (0.97 g, 10 mmol), 3-bromo-4-fluorobenzaldehyde (2.0 g, 10 mmol) and N-benzylpiperidine-3,5-dione (Ziegler, J. Amer. Chem. Soc. (1973), 95, 7458-7464) (2.2 g, 10 mmol) in ethyl alcohol (10 mL) was heated to reflux for 72 hours and then allowed to cool to ambient temperature. The solvent was evaporated and the residue was purified by flash chromatography over silica gel (5% ethanol/methylene chloride) to provide the title compound (3.0 g).

Aufarbeitung

  1. temperatureto reflux for 72 hours
  2. customThe solvent was evaporated
  3. customthe residue was purified by flash chromatography over silica gel (5% ethanol/methylene chloride)

Quellen und Nachweise

ORD-Eintrag
ord-7de4d39e05de4fbaa8cd757701196d42
Quelldatensatz
uspto-grants-2003_11
Patentnummer
US06642222B2

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