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

HRID 1484288

Reaction equation

HRID 1484288 reaction equation
[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]

Participants

4

Reactant 2

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

Product 1

HCID 665791676-Methoxy-2-methyl-3-phenyl-4H-chromen-4-oneYield 68.2%

Reagents, catalysts & solvents 1

HCID 7918Acetic AnhydrideSolvent

Procedure

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=7.1 Hz, 2H), 7.37 (m, 2H), 7.29 (m, 3H), 3.89 (s, 3H), 2.31 (s, 3H).

Workup

  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

Sources & evidence

ORD record
ord-cf3c1fa2258145aea382448e9928f18b
Source dataset
uspto-grants-2016_08
Patent number
US09421209B2

Linked notes

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