Imidazole → 1-ethyl-7-methyl-3-(4-{[tris(1-methylethyl)silyl]oxy}phenyl)-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one

HRID 1430064Notes

Reaction equation

HRID 1430064 reaction equation
[CH2:1]([N:3]1[C:11]2[C:6](=[N:7][CH:8]=[CH:9][C:10]=2[CH3:12])[N:5]([C:13]2[CH:18]=[CH:17][C:16]([OH:19])=[CH:15][CH:14]=2)[C:4]1=[O:20])[CH3:2].N1C=CN=C1.[CH:26]([Si:29](Cl)([CH:33]([CH3:35])[CH3:34])[CH:30]([CH3:32])[CH3:31])([CH3:28])[CH3:27].O>CN(C=O)C>[CH2:1]([N:3]1[C:11]2[C:6](=[N:7][CH:8]=[CH:9][C:10]=2[CH3:12])[N:5]([C:13]2[CH:18]=[CH:17][C:16]([O:19][Si:29]([CH:33]([CH3:35])[CH3:34])([CH:30]([CH3:32])[CH3:31])[CH:26]([CH3:28])[CH3:27])=[CH:15][CH:14]=2)[C:4]1=[O:20])[CH3:2]

Participants

6

Reactant 4

HCID 795ImidazoleHCID 962WaterHCID 139400Triisopropylsilyl chlorideHCID 58577432HCID 58577432, compound

Product 1

HCID 585775691-ethyl-7-methyl-3-(4-{[tris(1-methylethyl)silyl]oxy}phenyl)-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a stirred mixture of 1-ethyl-3-(4-hydroxyphenyl)-7-methyl-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (10 g) and 1H-imidazole (3.79 g) in DMF (100 mL) was added triisopropylsilyl chloride (9.54 mL) at 0° C. The mixture was stirred at room temperature for 3 days, treated with water, and extracted with AcOEt. The organic layer was dried over MgSO4 and concentrated in vacuo. The residue was purified by silica gel column chromatography (AcOEt/Hexane=1/10) to give the title compound (11.5 g).

Workup

  1. extractionextracted with AcOEt
  2. dry with materialThe organic layer was dried over MgSO4
  3. concentrationconcentrated in vacuo
  4. customThe residue was purified by silica gel column chromatography (AcOEt/Hexane=1/10)

Sources & evidence

ORD record
ord-275ae9f5ee054259b7c25ea91defd6b2
Source dataset
uspto-grants-2015_01
Patent number
US08940758B2

Reaction notes

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