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

HRID 547688Notes

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-d9ff171cda2e48baaa3659a27ee713c5
Source dataset: uspto-grants-2011_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07939549B2

Reaction notes

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