Potassium Carbonate → 1-benzenesulfonyl-5-[2-(tert-butyl-diphenyl-silanyloxy)-ethoxy]-2-[2-cyclopentyl-1-(4-methanesulfonyl-phenyl)-vinyl]-1H-pyrrolo[2,3-b]pyridine

HRID 1515657Notes

Reaction equation

HRID 1515657 reaction equation
C(=O)([O-])[O-].[K+].[K+].[C:7]1([S:13]([N:16]2[C:20]3=[N:21][CH:22]=[C:23]([OH:25])[CH:24]=[C:19]3[CH:18]=[C:17]2[C:26]([C:33]2[CH:38]=[CH:37][C:36]([S:39]([CH3:42])(=[O:41])=[O:40])=[CH:35][CH:34]=2)=[CH:27][CH:28]2[CH2:32][CH2:31][CH2:30][CH2:29]2)(=[O:15])=[O:14])[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1.Br[CH2:44][CH2:45][O:46][Si:47]([C:60]([CH3:63])([CH3:62])[CH3:61])([C:54]1[CH:59]=[CH:58][CH:57]=[CH:56][CH:55]=1)[C:48]1[CH:53]=[CH:52][CH:51]=[CH:50][CH:49]=1>CN(C)C=O.C(OCC)(=O)C>[C:7]1([S:13]([N:16]2[C:20]3=[N:21][CH:22]=[C:23]([O:25][CH2:44][CH2:45][O:46][Si:47]([C:60]([CH3:61])([CH3:63])[CH3:62])([C:54]4[CH:59]=[CH:58][CH:57]=[CH:56][CH:55]=4)[C:48]4[CH:53]=[CH:52][CH:51]=[CH:50][CH:49]=4)[CH:24]=[C:19]3[CH:18]=[C:17]2[C:26]([C:33]2[CH:34]=[CH:35][C:36]([S:39]([CH3:42])(=[O:40])=[O:41])=[CH:37][CH:38]=2)=[CH:27][CH:28]2[CH2:32][CH2:31][CH2:30][CH2:29]2)(=[O:14])=[O:15])[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 10915442(2-Bromoethoxy)(tert-butyl)diphenylsilaneHCID 672285961-benzenesulfonyl-2-[2-cyclopentyl-1-(4-methanesulfonyl-phenyl)-vinyl]-1H-pyrrolo[2,3-b]pyridin-5-ol

Product 1

HCID 672286821-benzenesulfonyl-5-[2-(tert-butyl-diphenyl-silanyloxy)-ethoxy]-2-[2-cyclopentyl-1-(4-methanesulfonyl-phenyl)-vinyl]-1H-pyrrolo[2,3-b]pyridineYield 62.8%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
80 °C

Procedure

Potassium carbonate (722 mg, 5.23 mmol) was added to a solution of 1-benzenesulfonyl-2-[2-cyclopentyl-1-(4-methanesulfonyl-phenyl)-vinyl]-1H-pyrrolo[2,3-b]pyridin-5-ol (prepared as in Example 13, 900 mg, 1.72 mmol) in N,N-dimethylformamide (2 mL) at room temperature. The mixture was stirred for 30 min and then treated with (2-bromo-ethoxy)-tert-butyl-diphenyl-silane (658 mg, 1.81 mmol) at room temperature. The mixture was heated at 80° C. and stirred for 3 h. The resulting mixture was diluted with ethyl acetate (150 mL), washed with brine, dried over anhydrous sodium sulfate and then concentrated in vacuo. Purification by flash silica gel chromatography (silica gel from QingDao, 200-300 mesh, glass column from Shanghai SD company, 33% ethyl acetate/hexanes) afforded 1-benzenesulfonyl-5-[2-(tert-butyl-diphenyl-silanyloxy)-ethoxy]-2-[2-cyclopentyl-1-(4-methanesulfonyl-phenyl)-vinyl]-1H-pyrrolo[2,3-b]pyridine (870 mg, 62.8%) as a white solid.

Workup

  1. stirringstirred for 3 h
  2. washwashed with brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. concentrationconcentrated in vacuo
  5. customPurification by flash silica gel chromatography (silica gel from QingDao, 200-300 mesh, glass column from Shanghai SD company, 33% ethyl acetate/hexanes)

Sources & evidence

ORD record
ord-d6fe673e201b45b88b9a7c5504a8f881
Source dataset
uspto-grants-2012_07
Patent number
US08222416B2

Reaction notes

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