Cesium carbonate → 3-{4-[(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-benzimidazol-2-yl)oxy]phenyl}-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one

HRID 1429892Notes

Reaction equation

HRID 1429892 reaction equation
[OH:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:12]3=[N:13][CH:14]=[CH:15][CH:16]=[C:11]3[NH:10][C:9]2=[O:17])=[CH:4][CH:3]=1.Cl[C:19]1[N:23]([CH2:24][O:25][CH2:26][CH2:27][Si:28]([CH3:31])([CH3:30])[CH3:29])[C:22]2[CH:32]=[CH:33][CH:34]=[CH:35][C:21]=2[N:20]=1.C(=O)([O-])[O-].[Cs+].[Cs+]>CN(C=O)C>[CH3:29][Si:28]([CH3:31])([CH3:30])[CH2:27][CH2:26][O:25][CH2:24][N:23]1[C:22]2[CH:32]=[CH:33][CH:34]=[CH:35][C:21]=2[N:20]=[C:19]1[O:1][C:2]1[CH:3]=[CH:4][C:5]([N:8]2[C:12]3=[N:13][CH:14]=[CH:15][CH:16]=[C:11]3[NH:10][C:9]2=[O:17])=[CH:6][CH:7]=1

Participants

5

Reactant 3

HCID 10796Cesium carbonateHCID 585775753-(4-hydroxyphenyl)-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-oneHCID 597528982-Chloro-1-[[2-(trimethylsilanyl)ethoxy]methyl]-benzimidazole

Product 1

HCID 585772423-{4-[(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-benzimidazol-2-yl)oxy]phenyl}-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-oneYield 72.6%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

3-(4-hydroxyphenyl)-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (370 mg), 2-chloro-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-benzimidazole (507 mg) and cesium carbonate (1.17 g) in DMF (10 mL) was heated at 100° C. for 4 h. After cooling to rt, the mixture was partitioned between AcOEt and H2O. The organic layer was washed with brine, dried over Na2SO4 and evaporated. The residue was purified by column chromatography (SiO2, hexane/AcOEt=1/1 to 0/1) to give 3-{4-[(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-benzimidazol-2-yl)oxy]phenyl}-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (560 mg) as white crystals.

Workup

  1. customthe mixture was partitioned between AcOEt and H2O
  2. washThe organic layer was washed with brine
  3. dry with materialdried over Na2SO4
  4. customevaporated
  5. customThe residue was purified by column chromatography (SiO2, hexane/AcOEt=1/1 to 0/1)

Sources & evidence

ORD record
ord-0bcf3a5e7a874376be48fa56bda42753
Source dataset
uspto-grants-2015_01
Patent number
US08940758B2

Reaction notes

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