1,4-Dioxane → 2-(2-ethylsulfanylphenyl)-6-(2-fluorophenyl)-3-methyl-3H-imidazo[4,5-b]pyridine

HRID 533616

Reaction equation

Br[C:2]1[CH:3]=[C:4]2[N:10]=[C:9]([C:11]3[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=3[S:17][CH2:18][CH3:19])[N:8]([CH3:20])[C:5]2=[N:6][CH:7]=1.O1CCOCC1.[F:27][C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][C:29]=1B(O)O.P([O-])([O-])([O-])=O.[K+].[K+].[K+]>C1(P(C2CCCCC2)C2C=CC=CC=2C2C(OC)=CC=CC=2OC)CCCCC1.O>[CH2:18]([S:17][C:12]1[CH:13]=[CH:14][CH:15]=[CH:16][C:11]=1[C:9]1[N:8]([CH3:20])[C:5]2=[N:6][CH:7]=[C:2]([C:29]3[CH:30]=[CH:31][CH:32]=[CH:33][C:28]=3[F:27])[CH:3]=[C:4]2[N:10]=1)[CH3:19]

Participants

Conditions

Temperature: 80 °C

Procedure

To a mixture of 6-bromo-2-(2-ethylsulfanylphenyl)-3-methyl-3H-imidazo[4,5-b]pyridine (350 mg) and 1,4-dioxane (5 ml), 2-fluorophenylboronic acid (150 mg), tripotassium phosphate (600 mg), 2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl (25 mg), and tris(dibenzylideneacetone)palladium(0) (14 mg) were sequentially added, heated to 80° C., and stirred with heating for 8 hours. The reaction mixture was cooled to room temperature, and then water was poured into the reaction mixture, and extracted with ethyl acetate. The organic layer was dried over sodium sulfate, and concentrated under reduced pressure. The resulting residue was subjected to silica gel column chromatography to give 349 mg of 2-(2-ethylsulfanylphenyl)-6-(2-fluorophenyl)-3-methyl-3H-imidazo[4,5-b]pyridine (hereinafter referred to as Present Compound 58).

Workup

additionwere sequentially added
temperaturewith heating for 8 hours
temperatureThe reaction mixture was cooled to room temperature
extractionextracted with ethyl acetate
dry with materialThe organic layer was dried over sodium sulfate
concentrationconcentrated under reduced pressure

Sources & evidence

ORD record: ord-589266803c1c47e9a06236c2337414e4
Source dataset: uspto-grants-2014_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08853238B2

Linked notes

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