methyl 4-(3-bromo-4-fluorophenyl)-2-(bromomethyl)-5-oxo-4,5,6,8-tetrahydro-1H-pyrano[3,4-b]pyridine-3-carboxylate → 9-(3-bromo-4-fluorophenyl)-5,9-dihydro-3H-furo [3,4-b]pyrano[4,3-e]pyridine-1,8(4H,7H)-dione

HRID 635983Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 635983
[Br:1][C:2]1[CH:3]=[C:4]([CH:9]2[C:14]([C:15]([O:17]C)=[O:16])=[C:13]([CH2:19]Br)[NH:12][C:11]3[CH2:21][O:22][CH2:23][C:24](=[O:25])[C:10]2=3)[CH:5]=[CH:6][C:7]=1[F:8]>C(Cl)Cl>[Br:1][C:2]1[CH:3]=[C:4]([CH:9]2[C:10]3[C:24](=[O:25])[CH2:23][O:22][CH2:21][C:11]=3[NH:12][C:13]3[CH2:19][O:16][C:15](=[O:17])[C:14]2=3)[CH:5]=[CH:6][C:7]=1[F:8]

Komponenten

3

Edukt 1

HCID 11328992methyl 4-(3-bromo-4-fluorophenyl)-2-(bromomethyl)-5-oxo-4,5,6,8-tetrahydro-1H-pyrano[3,4-b]pyridine-3-carboxylate

Produkt 1

HCID 99297439-(3-bromo-4-fluorophenyl)-5,9-dihydro-3H-furo [3,4-b]pyrano[4,3-e]pyridine-1,8(4H,7H)-dioneAusbeute 30,9 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

The product from Example 25B (0.30 g, 0.63 mmol) was heated neat to 130° C. for 15 minutes and cooled to ambient temperature. The residue was treated with methylene chloride and the resulting solid was collected by filtration, washed with methylene chloride and dried to provide the title compound (0.074 g) as a white solid.

Aufarbeitung

  1. filtrationthe resulting solid was collected by filtration
  2. washwashed with methylene chloride
  3. customdried

Quellen und Nachweise

ORD-Eintrag
ord-9cd9257503764d9194a89addfb3875f2
Quelldatensatz
uspto-grants-2001_02
Patentnummer
US06191140B1

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