Ethanol → HCID 85051016, compound

HRID 1884885Notes

Reaction equation

HRID 1884885 reaction equation
[OH-].[K+].[CH3:3][C:4]1[C:13]2[C:8](=[C:9]([C:19](=[O:21])[CH3:20])[C:10]([O:14][CH2:15][CH:16]=[CH:17]C)=[CH:11][CH:12]=2)[O:7][C:6](=[O:22])[CH:5]=1.[CH3:23][O:24][C:25]1[CH:26]=[C:27]([CH:30]=[C:31]([O:35][CH3:36])[C:32]=1[O:33][CH3:34])[CH:28]=O.[CH2:37](O)C>O>[CH3:3][C:4]1[C:13]2[C:8](=[C:9]([C:19](=[O:21])[CH:20]=[CH:28][C:27]3[CH:26]=[C:25]([O:24][CH3:23])[C:32]([O:33][CH3:34])=[C:31]([O:35][CH3:36])[CH:30]=3)[C:10]([O:14][CH2:15][C:16]([CH3:17])=[CH2:37])=[CH:11][CH:12]=2)[O:7][C:6](=[O:22])[CH:5]=1

Participants

6

Reactant 4

HCID 702EthanolHCID 68583,4,5-TrimethoxybenzaldehydeHCID 14797Potassium HydroxideHCID 86586315HCID 86586315, compound

Product 1

HCID 85051016HCID 85051016, compound

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A solution of KOH 50% (3 ml) is added to an equimolar solution of 4-methyl-7-methylallyloxy-8-acetylcoumarin (2.04 g, 0.0075 mol) and 3,4,5-trimethoxy-benzaldehyde (1.47 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 1.7 g of product m.p. 128-130° C., 1H-NMR (CDCl3) δ: 1.74 (s, 3H); 2.43 (s, 3H); 3.75-3.88 (m, 9H); 4.55 (s, 2H); 4.98 (d, 2H, J=15 Hz); 6,16 (s, 1H); 6.72 (s, 1H); 6.93 (d, 1H, J=8.9 Hz); 6.94 (d, 1H, J=16 Hz); 7.23 (d, 1H, J=16 Hz); 7.61 (d, 1H, J=8.9 Hz).

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-ca5b999e6c274433aa4b512366c175ad
Source dataset
uspto-grants-2004_07
Patent number
US06767916B2

Reaction notes

Loading…