Benzaldehyde → HCID 59047020, compound

HRID 1167869Notes

Reaction equation

HRID 1167869 reaction equation
[OH-].[K+].[CH3:3][C:4]([CH3:26])=[CH:5][CH2:6][O:7][C:8]1[CH:9]=[CH:10][C:11]2[C:12](=[O:25])[C:13]3[C:18]([O:19][C:20]=2[C:21]=1[C:22](=[O:24])[CH3:23])=[CH:17][CH:16]=[CH:15][CH:14]=3.[CH:27](=O)[C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1>C(O)C.O>[CH3:3][C:4]([CH3:26])=[CH:5][CH2:6][O:7][C:8]1[CH:9]=[CH:10][C:11]2[C:12](=[O:25])[C:13]3[C:18]([O:19][C:20]=2[C:21]=1[C:22](=[O:24])[CH:23]=[CH:27][C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1)=[CH:17][CH:16]=[CH:15][CH:14]=3

Participants

6

Reactant 3

HCID 240BenzaldehydeHCID 14797Potassium HydroxideHCID 22994580HCID 22994580, compound

Product 1

HCID 59047020HCID 59047020, compoundYield 68.2%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 962WaterSolvent

Procedure

A solution of KOH 50% (3 ml) is added to an equimolar solution of 3-(3-methylbut -2-enyloxy)-4-acetylxanthen-9-one (2.4 g, 0.0075 mol) and benzaldehyde (0.8 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 2.1 g of product m.p. 116-118° C., 1H-NMR (CDCl3)δ:1.69 (s, 3H); 1.72 (s, 3H); 4.71 (d, 2H, J=6.5); 5.38-5.40 (m, 1H); 7.05-7.10 (m, 2H); 7.08 (d, 1H, J=8.8 Hz); 7.10 (d, 1H, J=16 Hz); 7.30-7.48 (m, 6H); 7.50-7.58 (m, 2H); 7.65-7.60 (m, 1 H) 8.30-8.33(m, 1H); 8.42 (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-6c0aa43c02104bcea2bd551754eea10d
Source dataset
uspto-grants-2003_09
Patent number
US06620842B2

Reaction notes

Loading…