Sodium Acetate → 6-Methoxy-2-methyl-3-phenyl-4H-chromen-4-one

HRID 1476154

Reaktionsgleichung

Reaktionsgleichung von HRID 1476154
[OH:1][C:2]1[CH:7]=[CH:6][C:5]([O:8][CH3:9])=[CH:4][C:3]=1[C:10](=[O:18])[CH2:11][C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1.[C:19]([O-])(=O)[CH3:20].[Na+]>C(OC(=O)C)(=O)C>[CH3:9][O:8][C:5]1[CH:4]=[C:3]2[C:2](=[CH:7][CH:6]=1)[O:1][C:19]([CH3:20])=[C:11]([C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1)[C:10]2=[O:18]

Komponenten

4

Edukt 2

HCID 517045Sodium AcetateHCID 27756071-(2-Hydroxy-5-methoxyphenyl)-2-phenylethanone

Produkt 1

HCID 665791676-Methoxy-2-methyl-3-phenyl-4H-chromen-4-oneAusbeute 68,2 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 7918Acetic AnhydrideLösungsmittel

Versuchsvorschrift

Intermediate 20 (4 g, 16.51 mmoles) was taken in a RB flask and to this acetic anhydride (40 ml) and sodium acetate (9.48 g, 115.57 mmoles) were added and the mixture was refluxed for 12 h. After cooling to RT, the reaction mixture was quenched by the addition of ice cold water. The solid formed was filtered and washed with water. The product was dried under vacuum to afford the title compound as yellow solid (3 g, 68% yield). 1H-NMR (δ ppm, CDCl3, 400 MHz): δ 7.60(d, J=3.0 Hz, 1H), 7.45(t, J=7.1Hz, 2H), 7.37(m, 2H), 7.29(m, 3H), 3.89(s, 3H).2.31(s, 3H).

Aufarbeitung

  1. additionwere added
  2. temperaturethe mixture was refluxed for 12 h
  3. customthe reaction mixture was quenched by the addition of ice cold water
  4. customThe solid formed
  5. filtrationwas filtered
  6. washwashed with water
  7. customThe product was dried under vacuum

Quellen und Nachweise

ORD-Eintrag
ord-52a6bc4ababc44e8b5e63803e9303919
Quelldatensatz
uspto-grants-2015_04
Patentnummer
US09018375B2

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