Dimethylformamide → 4-(2-tert-butyl-1-methyl-1H-imidazol-4-yl)-1-[2-(trimethylsilyl)ethoxy]methyl-1H-pyrrolo[2,3-b]pyridine

HRID 1817531Notes

Reaction equation

HRID 1817531 reaction equation
[C:1]([C:5]1[NH:6][C:7]([C:10]2[CH:15]=[CH:14][N:13]=[C:12]3[N:16]([CH2:19][O:20][CH2:21][CH2:22][Si:23]([CH3:26])([CH3:25])[CH3:24])[CH:17]=[CH:18][C:11]=23)=[CH:8][N:9]=1)([CH3:4])([CH3:3])[CH3:2].[C:27](=O)([O-])[O-].[K+].[K+].CN(C=O)C.CI>O>[C:1]([C:5]1[N:9]([CH3:27])[CH:8]=[C:7]([C:10]2[CH:15]=[CH:14][N:13]=[C:12]3[N:16]([CH2:19][O:20][CH2:21][CH2:22][Si:23]([CH3:26])([CH3:25])[CH3:24])[CH:17]=[CH:18][C:11]=23)[N:6]=1)([CH3:4])([CH3:2])[CH3:3]

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 6328Methyl iodideHCID 11430Potassium CarbonateHCID 574775694-(2-tert-butyl-1H-imidazol-5-yl)-1-[2-(trimethylsilyl)ethoxy]methyl-1H-pyrrolo[2,3-b]pyridine

Product 1

HCID 574775714-(2-tert-butyl-1-methyl-1H-imidazol-4-yl)-1-[2-(trimethylsilyl)ethoxy]methyl-1H-pyrrolo[2,3-b]pyridineYield 51%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

To a mixture of 4-(2-tert-butyl-1H-imidazol-5-yl)-1-[2-(trimethylsilyl)ethoxy]methyl-1H-pyrrolo[2,3-b]pyridine (0.019 g, 0.000051 mol) and potassium carbonate (0.15 g, 0.0011 mol) in DMF (3 mL, 0.04 mol) was added methyl iodide (0.01 mL, 0.00015 mol) in two portions over 48 hours. Water was then added and the product was extracted with MTBE. The combined extracts were dried with sodium sulfate, filtered, and concentrated in vacuo, then purified by silica gel chromatography (20% ethyl acetate/hexanes) to afford 4-(2-tert-butyl-1-methyl-1H-imidazol-4-yl)-1-[2-(trimethylsilyl)ethoxy]methyl-1H-pyrrolo[2,3-b]pyridine (10 mg, 51%).

Workup

  1. extractionthe product was extracted with MTBE
  2. dry with materialThe combined extracts were dried with sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. custompurified by silica gel chromatography (20% ethyl acetate/hexanes)

Sources & evidence

ORD record
ord-23331634958a48d8aa165fdc3a3f8393
Source dataset
uspto-grants-2009_10
Patent number
US07598257B2

Reaction notes

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