4-{3E-[5-(2-amino-phenylethynyl)-2,4-dimethoxyphenyl]acryloyl}-N-pyridin-2-yl-benzenesulfonamide → 4-{3E-[5-(1H-Indol-2-yl)-2,4-dimethoxyphenyl]acryloyl}-N-pyridin-2-ylbenzenesulfonamide

HRID 347386Notes

Reaction equation

HRID 347386 reaction equation
[NH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]#[C:9][C:10]1[C:11]([O:38][CH3:39])=[CH:12][C:13]([O:36][CH3:37])=[C:14](/[CH:16]=[CH:17]/[C:18]([C:20]2[CH:25]=[CH:24][C:23]([S:26]([NH:29][C:30]3[CH:35]=[CH:34][CH:33]=[CH:32][N:31]=3)(=[O:28])=[O:27])=[CH:22][CH:21]=2)=[O:19])[CH:15]=1>C(#N)C.[Pd](Cl)Cl>[NH:1]1[C:2]2[C:3](=[CH:4][CH:5]=[CH:6][CH:7]=2)[CH:8]=[C:9]1[C:10]1[C:11]([O:38][CH3:39])=[CH:12][C:13]([O:36][CH3:37])=[C:14](/[CH:16]=[CH:17]/[C:18]([C:20]2[CH:25]=[CH:24][C:23]([S:26]([NH:29][C:30]3[CH:35]=[CH:34][CH:33]=[CH:32][N:31]=3)(=[O:28])=[O:27])=[CH:22][CH:21]=2)=[O:19])[CH:15]=1

Participants

4

Reactant 1

HCID 694901424-{3E-[5-(2-amino-phenylethynyl)-2,4-dimethoxyphenyl]acryloyl}-N-pyridin-2-yl-benzenesulfonamide

Product 1

HCID 112380194-{3E-[5-(1H-Indol-2-yl)-2,4-dimethoxyphenyl]acryloyl}-N-pyridin-2-ylbenzenesulfonamideYield 44%

Reagents, catalysts & solvents 2

HCID 24290Palladium ChlorideCatalystHCID 6342AcetonitrileSolvent

Procedure

A suspension of 4-{3E-[5-(2-amino-phenylethynyl)-2,4-dimethoxyphenyl]acryloyl}-N-pyridin-2-ylbenzenesulfonamide (Ex-57A, 735 mg, 1.36 mmol) in acetonitrile (100 mL) was purged with nitrogen for 10 minutes. Palladium(II) chloride (24 mg, 0.14 mmol) was added and the reaction mixture was refluxed for 3.5 hrs. The cooled reaction mixture was stirred with 3-mercaptopropyl functionalized silica gel (500 mg) for 5 minutes, filtered, and concentrated. The crude material was purified by column chromatography (2% MeOH in dichloromethane) to give 320 mg (44%) of the title compound as a red solid, mp 206–208° C. 1H-NMR (300 MHz, DMSO-d6) 11.13 (br s, 1H), 8.31 (s, 1H), 8.19 (d, 2H, J=7.80 Hz), 8.05 (m, 3H), 7.94 (br s, 1H), 7.82 (d, 1H, J=15.0 Hz), 7.74 (t, 2H, J=7.2 Hz), 7.49 (d, 1H, J=8.1 Hz), 7.41 (d, 1H, J=7.5 Hz), 7.21 (d, 1H, J=8.4 Hz), 7.05 (t, 1H, J=7.5 Hz), 6.95 (m, 2H), 6.82 (s, 2H), 4.03 (s, 3H), 3.98 (s, 3H). HRMS (ESI) Calcd. for C30H25N3O5S: (M+H)+; Found: 540.1576.

Workup

  1. customwas purged with nitrogen for 10 minutes
  2. temperaturethe reaction mixture was refluxed for 3.5 hrs
  3. customThe cooled reaction mixture
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe crude material was purified by column chromatography (2% MeOH in dichloromethane)

Sources & evidence

ORD record
ord-8d8a90b12abe404d868e1d9ea24eebe2
Source dataset
uspto-grants-2007_02
Patent number
US07173129B2

Reaction notes

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