Iodoethane → Ethyl 4-(tert-butoxycarbonyl(2,4-dimethoxybenzyl)amino)-6-ethyl-1-methyl-1,6-dihydroimidazo[4,5-d]pyrrolo[2,3-b]pyridine-7-carboxylate

HRID 1188024Notes

Reaction equation

HRID 1188024 reaction equation
[C:1]([O:5][C:6]([N:8]([CH2:27][C:28]1[CH:33]=[CH:32][C:31]([O:34][CH3:35])=[CH:30][C:29]=1[O:36][CH3:37])[C:9]1[N:14]=[C:13]2[NH:15][C:16]([C:18]([O:20][CH2:21][CH3:22])=[O:19])=[CH:17][C:12]2=[C:11]2[N:23]([CH3:26])[CH:24]=[N:25][C:10]=12)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH2:38](I)[CH3:39].C(=O)([O-])[O-].[Cs+].[Cs+]>CN(C=O)C.C(OCC)(=O)C>[C:1]([O:5][C:6]([N:8]([CH2:27][C:28]1[CH:33]=[CH:32][C:31]([O:34][CH3:35])=[CH:30][C:29]=1[O:36][CH3:37])[C:9]1[N:14]=[C:13]2[N:15]([CH2:38][CH3:39])[C:16]([C:18]([O:20][CH2:21][CH3:22])=[O:19])=[CH:17][C:12]2=[C:11]2[N:23]([CH3:26])[CH:24]=[N:25][C:10]=12)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

6

Reactant 3

HCID 6340IodoethaneHCID 10796Cesium carbonateHCID 69809714Ethyl 4-(tert-butoxycarbonyl(2,4-dimethoxybenzyl)amino)-1-methyl-1,6-dihydroimidazo[4,5-d]pyrrolo[2,3-b]pyridine-7-carboxylate

Product 1

HCID 69812358Ethyl 4-(tert-butoxycarbonyl(2,4-dimethoxybenzyl)amino)-6-ethyl-1-methyl-1,6-dihydroimidazo[4,5-d]pyrrolo[2,3-b]pyridine-7-carboxylate

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
60 °C

Procedure

To a solution of ethyl 4-(tert-butoxycarbonyl(2,4-dimethoxybenzyl)amino)-1-methyl-1,6-dihydroimidazo[4,5-d]pyrrolo[2,3-b]pyridine-7-carboxylate (example 1F, 5.046 g, 9.90 mmol) in DMF (49.5 mL) was added ethyl iodide (1.601 mL, 19.81 mmol) and cesium carbonate (6.45 g, 19.81 mmol). The reaction mixture was heated at 60° C. 60 min and cooled to room temperature. The reaction mixture was diluted with ethyl acetate and vacuum filtered to remove cesium carbonate. Saturated aqueous sodium bicarbonate was added and the aqueous layer was extracted with ethyl acetate (2×). The combined organic layers were washed with 10% lithium chloride (3×), dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo. Crude product was carried forward.

Workup

  1. temperature60 min and cooled to room temperature
  2. filtrationfiltered
  3. customto remove cesium carbonate
  4. additionSaturated aqueous sodium bicarbonate was added
  5. extractionthe aqueous layer was extracted with ethyl acetate (2×)
  6. washThe combined organic layers were washed with 10% lithium chloride (3×)
  7. dry with materialdried over anhydrous magnesium sulfate
  8. filtrationfiltered
  9. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-efd02893f0cb452c8bf8bda8a6340c9e
Source dataset
uspto-grants-2014_03
Patent number
US08673933B2

Reaction notes

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