Dimethylformamide → 4-[2-(3,5-Difluoro-phenyl)-6-methyl-pyridin-3-yloxy]-6,7-dimethoxy-quinoline

HRID 228790Notes

Reaction equation

CN(C)C=O.C(=O)([O-])[O-].[K+].[K+].I[C:13]1[C:18]([O:19][C:20]2[C:29]3[C:24](=[CH:25][C:26]([O:32][CH3:33])=[C:27]([O:30][CH3:31])[CH:28]=3)[N:23]=[CH:22][CH:21]=2)=[CH:17][CH:16]=[C:15]([CH3:34])[N:14]=1.[F:35][C:36]1[CH:37]=[C:38](B(O)O)[CH:39]=[C:40]([F:42])[CH:41]=1>O>[F:35][C:36]1[CH:37]=[C:38]([C:13]2[C:18]([O:19][C:20]3[C:29]4[C:24](=[CH:25][C:26]([O:32][CH3:33])=[C:27]([O:30][CH3:31])[CH:28]=4)[N:23]=[CH:22][CH:21]=3)=[CH:17][CH:16]=[C:15]([CH3:34])[N:14]=2)[CH:39]=[C:40]([F:42])[CH:41]=1

Participants

Conditions

Temperature: 70 °C

Procedure

N,N-Dimethylformamide (1 ml) and a 2 M aqueous potassium carbonate solution (1 ml) were added to 4-(2-iodo-6-methyl-pyridin-3-yloxy)-6,7-dimethoxy-quinoline (compound 116) (50 mg), tetrakistriphenylphosphine palladium (14 mg), and 3,5-difluorophenylboronic acid (56 mg) under an argon atmosphere, and the mixture was stirred at 70° C. for 5 hr. The reaction solution was cooled to room temperature, water was then added thereto, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was then washed with water and was dried over anhydrous sodium sulfate. The solvent was removed by distillation under the reduced pressure, and the residue was purified by thin layer chromatography using chloroform-methanol to give the title compound (23 mg, yield 47%).

Workup

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

Sources & evidence

ORD record: ord-17cf456e60b04877a3df7e0c1e32d90a
Source dataset: uspto-grants-2009_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07560558B2

Reaction notes

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