1H,3H-Naphtho(1,8-cd)pyran-1,3-dione, 6-bromo- → HCID 22623954, Verbindung

HRID 278974

Reaktionsgleichung

Reaktionsgleichung von HRID 278974
Cl.[C:2]([O:6][NH2:7])([CH3:5])([CH3:4])[CH3:3].[CH:8]1[CH:17]=[C:16]2[C:18]([O:20][C:21](=O)[C:14]3=[C:15]2[C:10](=[C:11]([Br:23])[CH:12]=[CH:13]3)[CH:9]=1)=[O:19]>N1C=CC=CC=1>[Br:23][C:11]1[CH:12]=[CH:13][C:14]2[C:21](=[O:20])[N:7]([O:6][C:2]([CH3:5])([CH3:4])[CH3:3])[C:18](=[O:19])[C:16]3[C:15]=2[C:10]=1[CH:9]=[CH:8][CH:17]=3

Komponenten

4

Edukt 2

HCID 664931H,3H-Naphtho(1,8-cd)pyran-1,3-dione, 6-bromo-HCID 2777906O-tert-butylhydroxylamine hydrochloride

Produkt 1

HCID 22623954HCID 22623954, VerbindungAusbeute 94,1 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1049PyridineLösungsmittel

Versuchsvorschrift

O-tert-Butylhydroxylamine hydrochloride (3.0 g, 23.9 mmol) was added to 4-bromo-1,8-naphthalic anhydride (5.0 g, 18.0 mmol) in pyridine (30.0 mL). The mixture was refluxed for 4 hours, concentrated, and the residue suspended in water. The solid was filtered and dried to give 5.9 g of the title compound.

Aufarbeitung

  1. temperatureThe mixture was refluxed for 4 hours
  2. concentrationconcentrated
  3. filtrationThe solid was filtered
  4. customdried

Quellen und Nachweise

ORD-Eintrag
ord-ec0c11766ff441789de622005b1fb1a4
Quelldatensatz
uspto-grants-2002_03
Patentnummer
US06362181B1

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