Ammonia → 1-[(5-Chloroindol-2-yl)sulfonyl]-4-[[5-(pyridin-2-yl)pyrimidin-2-yl]carbonyl]piperazine

HRID 352922Notes

Reaction equation

HRID 352922 reaction equation
Br[C:2]1[CH:3]=[N:4][C:5]([C:8]([N:10]2[CH2:15][CH2:14][N:13]([S:16]([C:19]3[NH:20][C:21]4[C:26]([CH:27]=3)=[CH:25][C:24]([Cl:28])=[CH:23][CH:22]=4)(=[O:18])=[O:17])[CH2:12][CH2:11]2)=[O:9])=[N:6][CH:7]=1.[N:29]1[CH:34]=[CH:33][CH:32]=[CH:31][C:30]=1[Sn](CCCC)(CCCC)CCCC.C(OCC)(=O)C.N>CN(C)C=O.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>[Cl:28][C:24]1[CH:25]=[C:26]2[C:21](=[CH:22][CH:23]=1)[NH:20][C:19]([S:16]([N:13]1[CH2:14][CH2:15][N:10]([C:8]([C:5]3[N:4]=[CH:3][C:2]([C:30]4[CH:31]=[CH:32][CH:33]=[CH:34][N:29]=4)=[CH:7][N:6]=3)=[O:9])[CH2:11][CH2:12]1)(=[O:18])=[O:17])=[CH:27]2

Participants

7

Reactant 4

HCID 222AmmoniaHCID 8857Ethyl AcetateHCID 6077842-(Tributylstannyl)pyridineHCID 227095721-[(5-Bromopyrimidin-2-yl)carbonyl]-4-[(5-chloroindol-2-yl)sulfonyl]piperazine

Product 1

HCID 227103331-[(5-Chloroindol-2-yl)sulfonyl]-4-[[5-(pyridin-2-yl)pyrimidin-2-yl]carbonyl]piperazineYield 51%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 6228DimethylformamideSolvent

Conditions

Temperature
100 °C

Procedure

At room temperature, 1-[(5-bromopyrimidin-2-yl)carbonyl]-4-[(5-chloroindol-2-yl)sulfonyl]piperazine (500 mg) and (pyridin-2-yl)tributyltin (418 mg) were dissolved in N,N-dimethylformamide (10 ml). To the reaction mixture was added tetrakis(triphenylphosphine)palladium(0) (69 mg), followed by stirring at 100° C. for 9 hours. After cooling to room temperature, ethyl acetate and ammonia solution were added. The resulting mixture was separated by ethyl acetate and water. The organic layer was dried over anhydrous sodium sulfate. The filtrate was concentrated and the residue was purified by chromatography on a silica gel column (4% methanol—methylene chloride). The resulting fraction was added with ethanol, followed by concentration. Diethyl ether was then added to the concentrate. Colorless powder thus precipitated was collected by filtration and dried, whereby the free form (254 mg) of the title compound was obtained. The resulting free form was dissolved in methylene chloride, followed by the addition of 1N hydrochloric acid (in ethanol) to make the solution acidic. After concentration, ethyl acetate and diethyl ether were added, followed by concentration. Colorless powder thus precipitated was collected by filtration and dried, whereby the title compound was obtained.

Workup

  1. temperatureAfter cooling to room temperature
  2. customThe resulting mixture was separated by ethyl acetate and water
  3. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  4. concentrationThe filtrate was concentrated
  5. customthe residue was purified by chromatography on a silica gel column (4% methanol—methylene chloride)
  6. additionThe resulting fraction was added with ethanol
  7. concentrationfollowed by concentration
  8. additionDiethyl ether was then added to the concentrate
  9. customColorless powder thus precipitated
  10. filtrationwas collected by filtration
  11. customdried

Sources & evidence

ORD record
ord-16457dc646ad43f79aae94216faff5f2
Source dataset
uspto-grants-2004_06
Patent number
US06747023B1

Reaction notes

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