1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride → 5-({2-[4-(2-tert-butylphenyl)piperazin-1-yl]-2-oxoethyl}sulfanyl)-1,3-dimethyl-1H-pyrazole-4-carbaldehyde

HRID 534876Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 534876
Cl.Cl.[C:3]([C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=1[N:13]1[CH2:18][CH2:17][NH:16][CH2:15][CH2:14]1)([CH3:6])([CH3:5])[CH3:4].[CH:19]([C:21]1[C:22]([CH3:32])=[N:23][N:24]([CH3:31])[C:25]=1[S:26][CH2:27][C:28](O)=[O:29])=[O:20].Cl.C(N=C=NCCCN(C)C)C.O.ON1C2C=CC=CC=2N=N1>O.CN(C)C=O.C(N(CC)CC)C>[C:3]([C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=1[N:13]1[CH2:18][CH2:17][N:16]([C:28](=[O:29])[CH2:27][S:26][C:25]2[N:24]([CH3:31])[N:23]=[C:22]([CH3:32])[C:21]=2[CH:19]=[O:20])[CH2:15][CH2:14]1)([CH3:6])([CH3:4])[CH3:5]

Komponenten

8

Edukt 4

HCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 27960291-Hydroxybenzotriazole hydrateHCID 470023932-[(4-formyl-1,3-dimethyl-1H-pyrazol-5-yl)sulfanyl]acetic acidHCID 667511491-(2-Tert-butylphenyl)piperazine dihydrochloride

Produkt 1

HCID 866633985-({2-[4-(2-tert-butylphenyl)piperazin-1-yl]-2-oxoethyl}sulfanyl)-1,3-dimethyl-1H-pyrazole-4-carbaldehydeAusbeute 64 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 962WaterLösungsmittelHCID 6228DimethylformamideLösungsmittelHCID 8471TriethylamineLösungsmittel

Versuchsvorschrift

A mixture of 1-(2-tert-butylphenyl)piperazine dihydrochloride obtained in Reference Example 1 (1.0 g), [(4-formyl-1,3-dimethyl-1H-pyrazol-5-yl)sulfanyl]acetic acid obtained in Reference Example 3 (736 mg), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (786 mg), 1-hydroxy-1H-benzotriazole monohydrate (628 mg), triethylamine (1.39 mL), and N,N-dimethylformamide (50 mL) was stirred at room temperature for over-night. Water was added to the reaction solution, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by flash column chromatography (silica gel, 80:20-30:70 hexane/ethyl acetate) to provide 5-({2-[4-(2-tert-butylphenyl)piperazin-1-yl]-2-oxoethyl}sulfanyl)-1,3-dimethyl-1H-pyrazole-4-carbaldehyde (900 mg, 64%) as a colorless oil.

Aufarbeitung

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe ethyl acetate layer was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customThe solvent was evaporated under reduced pressure
  5. customthe residue was purified by flash column chromatography (silica gel, 80:20-30:70 hexane/ethyl acetate)

Quellen und Nachweise

ORD-Eintrag
ord-336bfa2e363c4b49b742b8062c47e5a5
Quelldatensatz
uspto-grants-2014_10
Patentnummer
US08853215B2

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