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Trityl chloride → ethyl 3-{[1-methyl-5-(tritylamino)-1H-pyrazol-4-yl]amino}-3-oxopropanoate

HRID 1247834
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1247834
[NH2:1][C:2]1[N:6]([CH3:7])[N:5]=[CH:4][C:3]=1[NH:8][C:9](=[O:16])[CH2:10][C:11]([O:13][CH2:14][CH3:15])=[O:12].[C:17](Cl)([C:30]1[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1)([C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1)[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1.C(N(CC)CC)C>CN(C)C=O>[CH3:7][N:6]1[C:2]([NH:1][C:17]([C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)([C:30]2[CH:31]=[CH:32][CH:33]=[CH:34][CH:35]=2)[C:24]2[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=2)=[C:3]([NH:8][C:9](=[O:16])[CH2:10][C:11]([O:13][CH2:14][CH3:15])=[O:12])[CH:4]=[N:5]1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

5

Edukt 3

HCID 6456Trityl chlorideHCID 8471TriethylamineHCID 21904570Ethyl 3-((5-amino-1-methyl-1H-pyrazol-4-yl)amino)-3-oxopropanoate

Produkt 1

HCID 21904531ethyl 3-{[1-methyl-5-(tritylamino)-1H-pyrazol-4-yl]amino}-3-oxopropanoate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

The crude residue containing ethyl 3-[(5-amino-1-methyl-1H-pyrazol-4-yl)amino]-3-oxopropanoate was dissolved in N,N-dimethylformamide (20 ml), and trityl chloride (5.52 g) and triethylamine (4.14 ml) were added with stirring. The mixture was stirred overnight and quenched with water (10 ml). The whole mixture was extracted with ethyl acetate, and the extract was washed with water and brine, dried over magnesium sulfate and concentrated under reduced pressure to give a residual oil, which was chromatographed on silica gel eluting with dichloromethane-ethyl acetate (2:3) to give ethyl 3-{[1-methyl-5-(tritylamino)-1H-pyrazol-4-yl]amino}-3-oxopropanoate (1.23 g).

Aufarbeitung

  1. stirringThe mixture was stirred overnight
  2. customquenched with water (10 ml)
  3. extractionThe whole mixture was extracted with ethyl acetate
  4. washthe extract was washed with water and brine
  5. dry with materialdried over magnesium sulfate
  6. concentrationconcentrated under reduced pressure
  7. customto give a residual oil, which
  8. customwas chromatographed on silica gel eluting with dichloromethane-ethyl acetate (2:3)

Quellen und Nachweise

ORD-Eintrag
ord-4e67ed1b464f423692b74bf1274e03ab
Quelldatensatz
uspto-grants-2006_10
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07129232B2

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