Sodium Carbonate → 1-benzenesulfonyl-2-[2-cyclopentyl-1-(4-methanesulfonyl-phenyl)-vinyl]-1H-pyrrolo[2,3-b]pyridin-5-carboxylic acid methyl ester

HRID 1515590Notes

Reaction equation

HRID 1515590 reaction equation
[CH3:1][O:2][C:3]([C:5]1[CH:6]=[C:7]2[CH:13]=[C:12]([C:14](OS(C3C=CC(C)=CC=3)(=O)=O)=[CH:15][CH:16]3[CH2:20][CH2:19][CH2:18][CH2:17]3)[N:11]([S:32]([C:35]3[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=3)(=[O:34])=[O:33])[C:8]2=[N:9][CH:10]=1)=[O:4].[CH3:41][S:42]([C:45]1[CH:50]=[CH:49][C:48](B(O)O)=[CH:47][CH:46]=1)(=[O:44])=[O:43].C(=O)([O-])[O-].[Na+].[Na+]>O1CCOCC1.C(OCC)(=O)C.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[CH3:1][O:2][C:3]([C:5]1[CH:6]=[C:7]2[CH:13]=[C:12]([C:14]([C:48]3[CH:49]=[CH:50][C:45]([S:42]([CH3:41])(=[O:44])=[O:43])=[CH:46][CH:47]=3)=[CH:15][CH:16]3[CH2:20][CH2:19][CH2:18][CH2:17]3)[N:11]([S:32]([C:35]3[CH:36]=[CH:37][CH:38]=[CH:39][CH:40]=3)(=[O:34])=[O:33])[C:8]2=[N:9][CH:10]=1)=[O:4]

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 27343644-(Methanesulfonyl)phenylboronic acidHCID 866544971-benzenesulfonyl-2-[2-cyclopentyl-1-(toluene-4-sulfonyloxy)-vinyl]-1H-pyrrolo[2,3-b]pyridin-5-carboxylic acid methyl ester

Product 1

HCID 672294971-benzenesulfonyl-2-[2-cyclopentyl-1-(4-methanesulfonyl-phenyl)-vinyl]-1H-pyrrolo[2,3-b]pyridin-5-carboxylic acid methyl esterYield 93.1%

Reagents, catalysts & solvents 3

HCID 178418476HCID 178418476, compoundCatalystHCID 8857Ethyl AcetateSolventHCID 312751,4-DioxaneSolvent

Procedure

To a mixture of 1-benzenesulfonyl-2-[2-cyclopentyl-1-(toluene-4-sulfonyloxy)-vinyl]-1H-pyrrolo[2,3-b]pyridin-5-carboxylic acid methyl ester (0.9 g, 1.55 mmol), 4-(methanesulfonyl)phenylboronic acid (930 mg, 4.6 mmol) and dichlorobis(triphenylphosphine)palladium (II) (110 mg, 0.15 mmol) in dioxane (8 mL) was added an aqueous sodium carbonate solution (2 M, 2.3 mL). The resulting mixture was subjected to microwave irradiation for 120 min at 100° C. The mixture was diluted with ethyl acetate (150 mL), washed with a saturated aqueous sodium bicarbonate solution (2×30 mL), brine, dried over anhydrous sodium sulfate and then concentrated in vacuo. Purification by flash column chromatography (QingDao silica gel, 200-300 mesh, 50% ethyl acetate/hexanes) afforded 1-benzenesulfonyl-2-[2-cyclopentyl-1-(4-methanesulfonyl-phenyl)-vinyl]-1H-pyrrolo[2,3-b]pyridin-5-carboxylic acid methyl ester (815 mg, 73%) as a white solid: LC/MS m/e calcd for C29H28N2O6S2 [M+H]+ 565.68, observed 565.1.

Workup

  1. customirradiation for 120 min at 100° C
  2. washwashed with a saturated aqueous sodium bicarbonate solution (2×30 mL), brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. concentrationconcentrated in vacuo
  5. customPurification by flash column chromatography (QingDao silica gel, 200-300 mesh, 50% ethyl acetate/hexanes)

Sources & evidence

ORD record
ord-0e4c2777ea374ac89917f8bb021e97dd
Source dataset
uspto-grants-2012_07
Patent number
US08222416B2

Reaction notes

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