Hydrochloric Acid → Ethyl 6-(4-chlorophenyl)-2,4,6-trioxohexanoate

HRID 544170

Reaktionsgleichung

Reaktionsgleichung von HRID 544170
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8](=[O:13])[CH2:9][C:10](=[O:12])[CH3:11])=[CH:4][CH:3]=1.[C:14](OCC)(=[O:20])[C:15]([O:17][CH2:18][CH3:19])=[O:16].[H-].[Na+].Cl>COCCOC>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([C:8](=[O:13])[CH2:9][C:10](=[O:12])[CH2:11][C:14](=[O:20])[C:15]([O:17][CH2:18][CH3:19])=[O:16])=[CH:6][CH:7]=1

Komponenten

6

Edukt 4

HCID 313Hydrochloric AcidHCID 7268Diethyl OxalateHCID 24758Sodium hydrideHCID 2380831-(4-Chlorophenyl)butane-1,3-dione

Produkt 1

HCID 15578432Ethyl 6-(4-chlorophenyl)-2,4,6-trioxohexanoate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 80711,2-DimethoxyethaneLösungsmittel2×

Versuchsvorschrift

A solution of 1-(4-chlorophenyl)-1,3-butanedione (0.6 g) and diethyl oxalate (0.83 ml) in 1,2-dimethoxyethane (2 ml) was added to a stirred suspension of sodium hydride (0.44 g, 50% dispersion in mineral oil, washed with petrol 40°-60° C.) in 1,2-dimethoxyethane (5 ml) under nitrogen. The stirred mixture was heated under reflux for 1 hour, cooled and acidified with 2M hydrochloric acid (10 ml). The brown solid which formed was recrystallised from ethanol-water to give the title product (mp 93°-94° C.).

Aufarbeitung

  1. temperatureThe stirred mixture was heated
  2. temperatureunder reflux for 1 hour
  3. temperaturecooled
  4. customThe brown solid which formed
  5. customwas recrystallised from ethanol-water

Quellen und Nachweise

ORD-Eintrag
ord-d64d2eb4bba64c0b8da63df92b365699
Quelldatensatz
uspto-grants-1984_05
Patentnummer
US04448787

Verknüpfte Notizen

Wird geladen…