Hydrazine hydrate (1:1) → 1-(4-aminobutyl)-2-ethyl-2H-pyrazolo[3,4-c]quinolin-4-amine

HRID 1360503

Reaktionsgleichung

Reaktionsgleichung von HRID 1360503
[NH2:1][C:2]1[C:11]2=[N:12][N:13]([CH2:30][CH3:31])[C:14]([CH2:15][CH2:16][CH2:17][CH2:18][N:19]3C(=O)C4C(=CC=CC=4)C3=O)=[C:10]2[C:9]2[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=2[N:3]=1.O.NN>C(O)C>[NH2:19][CH2:18][CH2:17][CH2:16][CH2:15][C:14]1[N:13]([CH2:30][CH3:31])[N:12]=[C:11]2[C:10]=1[C:9]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[N:3]=[C:2]2[NH2:1]

Komponenten

4

Edukt 2

HCID 24654Hydrazine hydrate (1:1)HCID 577175922-[4-(4-amino-2-ethyl-2H-pyrazolo[3,4-c]quinolin-1-yl)butyl]isoindole-1,3-dione

Produkt 1

HCID 669586561-(4-aminobutyl)-2-ethyl-2H-pyrazolo[3,4-c]quinolin-4-amineAusbeute 87,2 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 702EthanolLösungsmittel

Versuchsvorschrift

2-[4-(4-Amino-2-ethyl-2H-pyrazolo[3,4-c]quinolin-1-yl)butyl]isoindole-1,3-dione (prepared as described in Example 22, 7. 10 g, 17.2 mmol), hydrazine hydrate (4.20 mL, 85.9 mmol), and ethanol (213 mL) were combined and heated at reflux for 30 minutes. The solution was allowed to cool to ambient temperature, then was cooled to 0° C. A white solid precipitated from the solution and was isolated by filtration and washed with ethanol. The crude product was purified by chromatography on a HORIZON HPFC system (silica, gradient elution with 10%-75% CMA in chloroform). The appropriate fractions were combined and concentrated under reduced pressure to afford 4.25 g of 1-(4-aminobutyl)-2-ethyl-2H-pyrazolo[3,4-c]quinolin-4-amine.

Aufarbeitung

  1. temperatureheated
  2. temperatureat reflux for 30 minutes
  3. temperaturewas cooled to 0° C
  4. customA white solid precipitated from the solution
  5. customwas isolated by filtration
  6. washwashed with ethanol
  7. customThe crude product was purified by chromatography on a HORIZON HPFC system (silica, gradient elution with 10%-75% CMA in chloroform)
  8. concentrationconcentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-fe19d6aad08b400fac79855b17e4d918
Quelldatensatz
uspto-grants-2011_02
Patentnummer
US07879849B2

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