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4-Quinolinecarboxylic acid, 3-hydroxy-2-methyl- → 6-Benzyloxy-7-methoxy-4-(2-methyl-quinolin-3-yloxy)-quinoline

HRID 229018
Notes
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Reaction equation

HRID 229018 reaction equation
[OH:1][C:2]1[C:3]([CH3:15])=[N:4][C:5]2[C:10]([C:11]=1C(O)=O)=[CH:9][CH:8]=[CH:7][CH:6]=2.[CH2:16]([O:23][C:24]1[CH:25]=[C:26]2[C:31](=[CH:32][C:33]=1[O:34][CH3:35])[N:30]=[CH:29][CH:28]=[C:27]2Cl)[C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1>CN(C1C=CN=CC=1)C.ClC1C=CC=CC=1Cl>[CH2:16]([O:23][C:24]1[CH:25]=[C:26]2[C:31](=[CH:32][C:33]=1[O:34][CH3:35])[N:30]=[CH:29][CH:28]=[C:27]2[O:1][C:2]1[C:3]([CH3:15])=[N:4][C:5]2[C:10]([CH:11]=1)=[CH:9][CH:8]=[CH:7][CH:6]=2)[C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 2

HCID 670244-Quinolinecarboxylic acid, 3-hydroxy-2-methyl-HCID 230227816-(Benzyloxy)-4-chloro-7-methoxyquinoline

Product 1

HCID 230784416-Benzyloxy-7-methoxy-4-(2-methyl-quinolin-3-yloxy)-quinolineYield 63%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 7239
1,2-Dichlorobenzene
Solvent

Conditions

Temperature
150 °C

Procedure

3-Hydroxy-2-methyl-4-quinoline carboxylic acid (549 mg), 6-benzyloxy-4-chloro-7-methoxyquinoline (810 mg), and 4-(N,N-dimethylamino)-pyridine (990 mg) were dissolved in 1,2-dichlorobenzene (40 ml) to prepare a solution. The mixture was stirred at 150° C. overnight. The reaction solution was cooled to room temperature, and the solvent was then removed by distillation under the reduced pressure. Water was added to the residue, and the mixture was extracted with chloroform. The chloroform layer was washed with water and was then dried over anhydrous sodium sulfate. The solvent was removed by distillation under the reduced pressure, and the residue was purified by column chromatography using hexane-acetone to give the title compound (718 mg, yield 63%).

Workup

  1. customto prepare a solution
  2. temperatureThe reaction solution was cooled to room temperature
  3. customthe solvent was then removed by distillation under the reduced pressure
  4. additionWater was added to the residue
  5. extractionthe mixture was extracted with chloroform
  6. washThe chloroform layer was washed with water
  7. dry with materialwas then dried over anhydrous sodium sulfate
  8. customThe solvent was removed by distillation under the reduced pressure
  9. customthe residue was purified by column chromatography

Sources & evidence

ORD record
ord-8d3c988bb38246bea1b5dbe58048b442
Source dataset
uspto-grants-2009_07
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07560558B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes