Sodium Hydroxide → N-[7-(2,4-Dichlorophenyl)-2-ethylpyrazolo[1,5-a]pyridin-3-yl]-N-(2-methoxyethyl)amine

HRID 1865002

반응식

HRID 1865002 반응식
[Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[CH:4][C:3]=1[C:9]1[N:14]2[N:15]=[C:16]([CH2:26][CH3:27])[C:17]([NH:18]C(=O)OC(C)(C)C)=[C:13]2[CH:12]=[CH:11][CH:10]=1.[H-].[Na+].[CH3:30][O:31][CH2:32][CH2:33]Br.Cl.C(OCC)(=O)C.[OH-].[Na+]>CN(C)C=O.C(OCC)(=O)C.O>[Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[CH:4][C:3]=1[C:9]1[N:14]2[N:15]=[C:16]([CH2:26][CH3:27])[C:17]([NH:18][CH2:33][CH2:32][O:31][CH3:30])=[C:13]2[CH:12]=[CH:11][CH:10]=1

참가 물질

9

반응물 5

HCID 14798Sodium HydroxideHCID 24758Sodium hydrideHCID 809722-Bromoethyl methyl etherHCID 21866389Hydrogen chloride-ethyl acetateHCID 21984513tert-butyl N-[7-(2,4-dichlorophenyl)-2-ethylpyrazolo[1,5-a]pyridin-3-yl]carbamate

생성물 1

HCID 21984623N-[7-(2,4-Dichlorophenyl)-2-ethylpyrazolo[1,5-a]pyridin-3-yl]-N-(2-methoxyethyl)amine

시약·촉매·용매 3

HCID 962Water용매HCID 6228Dimethylformamide용매HCID 8857Ethyl Acetate용매2회

실험 절차

After dissolving tert-butyl N-[7-(2,4-dichlorophenyl)-2-ethylpyrazolo[1,5-a]pyridin-3-yl]carbamate (57 mg) in N,N-dimethylformamide (2 mL), sodium hydride (60%, 7.3 mg) was added while cooling on ice, and then 2-bromoethyl methyl ether (0.015 mL) was added and the mixture was stirred for 1 hour. Water was added to the reaction mixture, extraction was performed with ethyl acetate and the extract washed with brine. The obtained organic layer was dried over anhydrous magnesium sulfate and filtered, and then the solvent was concentrated under reduced pressure to obtain a crude product. This was dissolved in ethyl acetate (1 mL) without purification, a 4 N hydrochloric acid/ethyl acetate solution (2 mL) was added, and the mixture was stirred at room temperature for 1 hour. The reaction mixture was neutralized with 5 N aqueous sodium hydroxide while cooling on ice, and then extraction was performed with ethyl acetate and the organic layer washed with water and brine. After drying over anhydrous magnesium sulfate and filtration, the solvent was concentrated under reduced pressure, the residue was purified by silica gel column chromatography, and the title compound (46 mg) was obtained from the n-hexane:ethyl acetate (5:1) fraction as a yellow oil.

후처리

  1. additionwas added
  2. temperaturewhile cooling on ice
  3. washthe extract washed with brine
  4. dry with materialThe obtained organic layer was dried over anhydrous magnesium sulfate
  5. filtrationfiltered
  6. concentrationthe solvent was concentrated under reduced pressure
  7. customto obtain a crude product
  8. stirringthe mixture was stirred at room temperature for 1 hour
  9. temperaturewhile cooling on ice
  10. extractionextraction
  11. washthe organic layer washed with water and brine
  12. dry with materialAfter drying over anhydrous magnesium sulfate and filtration
  13. concentrationthe solvent was concentrated under reduced pressure
  14. customthe residue was purified by silica gel column chromatography

출처 및 근거

ORD 기록
ord-2cd8648d9378438c87bed592f98a432d
출처 데이터셋
uspto-grants-2009_12
특허 번호
US07625925B2

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