3-Methoxybenzaldehyde → HCID 59094103, compound

HRID 1167875Notes

Reaction equation

HRID 1167875 reaction equation
[OH-].[K+].[CH2:3]([O:6][C:7]1[C:16]([C:17](=[O:19])[CH3:18])=[C:15]2[C:10]([C:11](=[O:27])[C:12]([CH3:26])=[C:13]([C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=3)[O:14]2)=[CH:9][CH:8]=1)[CH:4]=[CH2:5].[CH3:28][O:29][C:30]1[CH:31]=[C:32]([CH:35]=[CH:36][CH:37]=1)[CH:33]=O>C(O)C.O>[CH3:26][C:12]1[C:11](=[O:27])[C:10]2[C:15](=[C:16]([C:17](=[O:19])[CH:18]=[CH:33][C:32]3[CH:35]=[CH:36][CH:37]=[C:30]([O:29][CH3:28])[CH:31]=3)[C:7]([O:6][CH2:3][CH:4]=[CH2:5])=[CH:8][CH:9]=2)[O:14][C:13]=1[C:20]1[CH:21]=[CH:22][CH:23]=[CH:24][CH:25]=1

Participants

6

Reactant 3

HCID 115693-MethoxybenzaldehydeHCID 14797Potassium HydroxideHCID 22994583HCID 22994583, compound

Product 1

HCID 59094103HCID 59094103, compoundYield 70.7%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 962WaterSolvent

Procedure

A solution of KOH 50% (3 ml) is added to an equimolar solution of 7-allyloxy-8acetyl -3-methylflavone (2.5 g, 0.0075 mol) and 3-methoxy-benzaldehyde (1.01 g, 0.0075 mol) in ethanol 95%; the addition is performed under energetic stirring at room temperature. The reaction is left under stirring for one night and then diluted with water and acidified; the precipitate is separated by filtration and dried under vacuum. The compound is crystallized by methanol to give 2.4 g of product m.p. 90-92° C., 1H-NMR (CDCl3)δ:2.20 (s, 3H); 3.84 (s, 3H); 4.74 (d, 2H, J=5.1 Hz); 5.1-5.3 (m, 2H); 5.91-6.02 (m, 1H); 6.96-7.18 (m, 4H); 7.31 (d, 1H, J=16 Hz); 7.32-7.35 (m, 1H); 7.36-7.43 (m, 3H); 7.55-7.59 (m, 2H); 8.34 (d, 1H, J=8.9Hz).

Workup

  1. additionthe addition
  2. waitThe reaction is left
  3. stirringunder stirring for one night
  4. customthe precipitate is separated by filtration
  5. customdried under vacuum
  6. customThe compound is crystallized by methanol

Sources & evidence

ORD record
ord-379865829d1d49f6a9b5f557ef1504af
Source dataset
uspto-grants-2003_09
Patent number
US06620842B2

Reaction notes

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