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Benzyl Bromide → 5-((3-Benzyloxy-4-methoxyanilino)methylene)-2,2-dimethyl-1,3-dioxane-4,6-dione

HRID 393595
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 393595
[OH:1][C:2]1[CH:3]=[C:4]([CH:17]=[CH:18][C:19]=1[O:20][CH3:21])[NH:5][CH:6]=[C:7]1[C:12](=[O:13])[O:11][C:10]([CH3:15])([CH3:14])[O:9][C:8]1=[O:16].C(=O)([O-])[O-].[K+].[K+].[CH2:28](Br)[C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1>CN(C=O)C>[CH2:28]([O:1][C:2]1[CH:3]=[C:4]([CH:17]=[CH:18][C:19]=1[O:20][CH3:21])[NH:5][CH:6]=[C:7]1[C:12](=[O:13])[O:11][C:10]([CH3:14])([CH3:15])[O:9][C:8]1=[O:16])[C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

5

Edukt 3

HCID 7498Benzyl BromideHCID 11430Potassium CarbonateHCID 226465515-((3-Hydroxy-4-methoxyanilino)methylene)-2,2-dimethyl-1,3-dioxane-4,6-dione

Produkt 1

HCID 226465295-((3-Benzyloxy-4-methoxyanilino)methylene)-2,2-dimethyl-1,3-dioxane-4,6-dioneAusbeute 83,2 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228
Dimethylformamide
Lösungsmittel

Reaktionsbedingungen

Temperatur
65 °C

Versuchsvorschrift

A mixture of 5-((3-hydroxy-4-methoxyanilino)methylene)-2,2-dimethyl-1,3-dioxane-4,6-dione (20 g, 69 mmol), potassium carbonate (12.4 g, 90 mmol) and benzyl bromide (15.4 g, 90 mmol) in DMF (100 ml) was heated at 65° C. for 2 hours. Two thirds of the DMF was removed from the mixture by evaporation, the mixture was diluted with water, adjusted to pH4 with 5M hydrochloric acid and extracted with ethyl acetate. The combined extracts were washed with water and then brine, dried (MgSO4) and the volatiles removed by evaporation. The solid residue was triturated with ether, and collected by filtration and dried under vacuum to give 5-((3-benzyloxy-4-methoxyanilino)methylene)-2,2-dimethyl-1,3-dioxane-4,6-dione (22 g, 83%) as a cream solid.

Aufarbeitung

  1. customTwo thirds of the DMF was removed from the mixture by evaporation
  2. additionthe mixture was diluted with water
  3. extractionextracted with ethyl acetate
  4. washThe combined extracts were washed with water
  5. dry with materialbrine, dried (MgSO4)
  6. customthe volatiles removed by evaporation
  7. customThe solid residue was triturated with ether
  8. filtrationcollected by filtration
  9. customdried under vacuum

Quellen und Nachweise

ORD-Eintrag
ord-ca3bb5cda7084d30afd871c908917915
Quelldatensatz
uspto-grants-2004_10
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US06809097B1

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