Dimethylformamide → 3-(2-Cyanophenyl)-5-(2-pyridyl)-2-methoxypyridine

HRID 497819Notes

Reaction equation

[N:1]1[CH:6]=[CH:5][CH:4]=[CH:3][C:2]=1[C:7]1[CH:8]=[C:9](Br)[C:10]([O:13][CH3:14])=[N:11][CH:12]=1.[C:16]([C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=1B1OC(C([O-])=O)C=CO1)#[N:17].C(=O)([O-])[O-].[Cs+].[Cs+].CN(C)C=O>C(OCC)(=O)C>[C:16]([C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=1[C:9]1[C:10]([O:13][CH3:14])=[N:11][CH:12]=[C:7]([C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][N:1]=2)[CH:8]=1)#[N:17]

Participants

Conditions

Temperature: 140 °C

Procedure

Tetrakistriphenylphosphine palladium (0.15 g) was added to a mixed solution of 0.50 g of 5-(2-pyridyl)-3-bromo-2-methoxypyridine, 0.42 g of 2-(2-cyanophenyl)-1,3,2-dioxaborinate, 0.82 g of cesium carbonate and 20 ml of dimethylformamide and the mixture was stirred at 140° C. in a nitrogen atmosphere for 5 hours. After cooling to room temperature, ethyl acetate was added thereto, the mixture was washed with water and a saturated saline solution and dried over magnesium sulfate. The solvent was concentrated in vacuo and the residue was purified by a silica gel column chromatography (ethyl acetate:hexane=1:3) to give 0.36 of the title compound as pale yellow powder.

Workup

temperatureAfter cooling to room temperature
washthe mixture was washed with water
dry with materiala saturated saline solution and dried over magnesium sulfate
concentrationThe solvent was concentrated in vacuo
customthe residue was purified by a silica gel column chromatography (ethyl acetate:hexane=1:3)

Sources & evidence

ORD record: ord-779340c2cb404a56839a031b0de81559
Source dataset: uspto-grants-2005_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06949571B2

Reaction notes

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