Potassium Carbonate → 1-benzenesulfonyl-3-(3,4-dimethoxy-phenyl)-1H-pyrrolo[2,3-b]pyridine

HRID 1820876

Reaction equation

HRID 1820876 reaction equation
[C:1]1([S:7]([N:10]2[C:14]3=[N:15][CH:16]=[CH:17][CH:18]=[C:13]3[C:12](Br)=[CH:11]2)(=[O:9])=[O:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[CH3:20][O:21][C:22]1[CH:23]=[C:24](B(O)O)[CH:25]=[CH:26][C:27]=1[O:28][CH3:29].C(=O)([O-])[O-].[K+].[K+]>O1CCCC1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[C:1]1([S:7]([N:10]2[C:14]3=[N:15][CH:16]=[CH:17][CH:18]=[C:13]3[C:12]([C:25]3[CH:24]=[CH:23][C:22]([O:21][CH3:20])=[C:27]([O:28][CH3:29])[CH:26]=3)=[CH:11]2)(=[O:9])=[O:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 27347023,4-Dimethoxyphenylboronic acidHCID 455881343-Bromo-1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridine

Product 1

HCID 578917891-benzenesulfonyl-3-(3,4-dimethoxy-phenyl)-1H-pyrrolo[2,3-b]pyridine

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
120 °C

Procedure

1-Benzenesulfonyl-3-bromo-1H-pyrrolo[2,3-b]pyridine (4, 1.00 g, 2.96 mmol) was dissolved in tetrahydrofuran (16 mL) and 3,4-dimethoxyphenyl boronic acid (1.35 g, 7.41 mmol), tetrakis(triphenylphosphine)palladium(0) (200 mg, 0.1 mmol), and 1 M potassium carbonate (8 mL) were added. The reaction mixture was heated in a CEM Discover microwave at 120° C. for 10 minutes. The reaction mixture was concentrated under reduced pressure and partitioned between ethyl acetate and water. The organic portions were dried with anhydrous magnesium sulfate, filtered, and the filtrate was adsorbed onto silica. The mixture was purified by flash chromatography (30% ethyl acetate:hexanes) to provide the desired product, 5, (909 mg, 78%). MS(ESI) [M+H+]+=394.9.

Workup

  1. concentrationThe reaction mixture was concentrated under reduced pressure
  2. custompartitioned between ethyl acetate and water
  3. dry with materialThe organic portions were dried with anhydrous magnesium sulfate
  4. filtrationfiltered
  5. customThe mixture was purified by flash chromatography (30% ethyl acetate:hexanes)

Sources & evidence

ORD record
ord-cd4a665d843e4f7793eede53cb126882
Source dataset
uspto-grants-2009_10
Patent number
US07605168B2

Linked notes

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