Xanthoxylin → 1-{4,6-Dimethoxy-2-[(6,7-dimethoxy-4-quinolyl)oxy]-phenyl}-1-ethanone

HRID 228548

Reaction equation

Cl[C:2]1[C:11]2[C:6](=[CH:7][C:8]([O:14][CH3:15])=[C:9]([O:12][CH3:13])[CH:10]=2)[N:5]=[CH:4][CH:3]=1.[CH3:16][C:17]([C:19]1[C:24]([O:25][CH3:26])=[CH:23][C:22]([O:27][CH3:28])=[CH:21][C:20]=1[OH:29])=[O:18]>CN(C)C1C=CN=CC=1.ClC1C=CC=CC=1Cl>[CH3:28][O:27][C:22]1[CH:23]=[C:24]([O:25][CH3:26])[C:19]([C:17](=[O:18])[CH3:16])=[C:20]([O:29][C:2]2[C:11]3[C:6](=[CH:7][C:8]([O:14][CH3:15])=[C:9]([O:12][CH3:13])[CH:10]=3)[N:5]=[CH:4][CH:3]=2)[CH:21]=1

Participants

Conditions

Temperature: 120 °C

Procedure

4-Chloro-6,7-dimethoxyquinoline (56 mg), 2-hydroxy-4,6-dimethoxyacetophenone (196 mg), and 4-dimethylaminopyridine (122 mg) were suspended in o-dichlorobenzene (1 ml), and the suspension was stirred at 120° C. overnight. The reaction solution was cooled to room temperature, and the solvent was removed by distillation under the reduced pressure. Water was then added to the residue, and the mixture was extracted with chloroform. The chloroform layer was washed with water and was dried over anhydrous sodium sulfate. The solvent was removed therefrom by distillation under the reduced pressure. The residue was purified by column chromatography using acetone-hexane to give the title compound (25 mg, yield 27%).

Workup

temperatureThe reaction solution was cooled to room temperature
customthe solvent was removed by distillation under the reduced pressure
additionWater was then added to the residue
extractionthe mixture was extracted with chloroform
washThe chloroform layer was washed with water
dry with materialwas dried over anhydrous sodium sulfate
customThe solvent was removed
distillationby distillation under the reduced pressure
customThe residue was purified by column chromatography

Sources & evidence

ORD record: ord-2698dd9263034d84b4c14d37e94e58bd
Source dataset: uspto-grants-2009_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07560558B2

Linked notes

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