1-Bromooctane → HCID 19087143, Verbindung

HRID 1464684

Reaktionsgleichung

Reaktionsgleichung von HRID 1464684
[OH:1][C:2]1[C:15]2[C:14](=[O:16])[C:13]3[C:8](=[CH:9][CH:10]=[CH:11][CH:12]=3)[O:7][C:6]=2[CH:5]=[C:4]([OH:17])[CH:3]=1.C([O-])([O-])=O.[K+].[K+].Br[CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH3:32]>C(C(C)=O)C>[OH:1][C:2]1[C:15]2[C:14](=[O:16])[C:13]3[C:8](=[CH:9][CH:10]=[CH:11][CH:12]=3)[O:7][C:6]=2[CH:5]=[C:4]([O:17][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH3:32])[CH:3]=1

Komponenten

5

Edukt 3

HCID 81401-BromooctaneHCID 11430Potassium CarbonateHCID 54881931,3-Dihydroxy-xanthone

Produkt 1

HCID 19087143HCID 19087143, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6569Methyl Ethyl KetoneLösungsmittel

Versuchsvorschrift

22.8 g of 1,3-dihydroxyxanthone (prepared according to Grover, J. Chem. Soc. 1955, 3982) together with 15.2 g of K2CO3 and 21.2 g of 1-bromooctane are refluxed for 15 hours in 250 ml of methyl ethyl ketone. The salt is isolated by filtration from the cooled reaction mixture and the methyl ethyl ketone solution is concentrated by evaporation under vacuum. Recrystallisation of the residue from heptane gives 1-hydroxy-3-octoxyxanthone with a melting point of 98° C.

Aufarbeitung

  1. customThe salt is isolated by filtration from the cooled reaction mixture
  2. concentrationthe methyl ethyl ketone solution is concentrated by evaporation under vacuum
  3. customRecrystallisation of the residue from heptane

Quellen und Nachweise

ORD-Eintrag
ord-b08f62c80f224e89b0d45a0b3b018ae2
Quelldatensatz
uspto-grants-1994_04
Patentnummer
US05306829

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