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Water → N-cyclopentyl-3-[2-(cyclopentylamino)-4-pyrimidinyl]-2-(4-methoxyphenyl)-pyrazolo[1,5-alpha]pyridin-5-amine

HRID 724004
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Reaktionsgleichung

Reaktionsgleichung von HRID 724004
[CH:1]1([NH:6][C:7]2[CH:12]=[CH:11][N:10]3[N:13]=[C:14]([C:23]4[CH:28]=[CH:27][C:26]([O:29][CH3:30])=[CH:25][CH:24]=4)[C:15]([C:16](=O)[CH:17]=[CH:18]N(C)C)=[C:9]3[CH:8]=2)[CH2:5][CH2:4][CH2:3][CH2:2]1.Cl.[CH:32]1([NH:37][C:38]([NH2:40])=[NH:39])[CH2:36][CH2:35][CH2:34][CH2:33]1.C(=O)([O-])[O-].[K+].[K+].O>CN(C)C=O>[CH:1]1([NH:6][C:7]2[CH:12]=[CH:11][N:10]3[N:13]=[C:14]([C:23]4[CH:24]=[CH:25][C:26]([O:29][CH3:30])=[CH:27][CH:28]=4)[C:15]([C:16]4[CH:17]=[CH:18][N:40]=[C:38]([NH:37][CH:32]5[CH2:36][CH2:35][CH2:34][CH2:33]5)[N:39]=4)=[C:9]3[CH:8]=2)[CH2:2][CH2:3][CH2:4][CH2:5]1
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Komponenten

6

Edukt 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 693555081-[5-(Cyclopentylamino)-2-(4-methoxyphenyl)pyrazolo[1,5-alpha]pyridin-3-yl]-3-(dimethylamino)-2-propen-1-oneHCID 178479367HCID 178479367, Verbindung

Produkt 1

HCID 9847463N-cyclopentyl-3-[2-(cyclopentylamino)-4-pyrimidinyl]-2-(4-methoxyphenyl)-pyrazolo[1,5-alpha]pyridin-5-amine
Ausbeute 87 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

To a solution of 1-[5-(cyclopentylamino)-2-(4-methoxyphenyl)pyrazolo[1,5-α]pyridin-3-yl]-3-(dimethylamino)-2-propen-1-one (1.05 g, 2.60 mmol) in N,N-dimethylformamide (20 mL) was added N-cyclopentyl guanidine hydrochloride (1.27 g, 7.79 mmol; Prepared by modification of a procedure from Bannard, R. A. B. et al., Can. J. Chem. 1958, 36,1541–1549), followed by potassium carbonate (0.54 g, 3.89 mmol). The resulting solution was heated at reflux for 15 hours. Upon cooling to room temperature, water was added. The mixture was extracted with ethyl acetate. The ethyl acetate phase was washed with brine, dried (magnesium sulfate), filtered and concentrated in vacuo. The resulting residue was purified by flash chromatography (4:6 ethyl acetate:hexane) to give N-cyclopentyl-3-[2-(cyclopentylamino)-4-pyrimidinyl]-2-(4-methoxyphenyl)-pyrazolo[1,5-α]pyridin-5-amine (1.06 g, 87%) as a yellow solid. 1H NMR (CDCl3): δ 8.15 (d, 1H), 7.91 (d, 1H), 7.51 (d, 2H), 7.41 (d, 1H), 6.94 (d, 2H), 6.26 (d, 1H), 6.22 (dd, 1H). 5.11 (d, 1H), 4.42 (m, 1H), 4.09 (d, 1H), 3.88 (m, 1H), 3.85 (s, 3H), 2.10–2.01 (m, 4H), 1.76–1.52 (m, 12H); MS m/z 469 (M+1).

Aufarbeitung

  1. customPrepared by modification of a procedure from Bannard, R
  2. temperatureThe resulting solution was heated
  3. temperatureat reflux for 15 hours
  4. extractionThe mixture was extracted with ethyl acetate
  5. washThe ethyl acetate phase was washed with brine
  6. dry with materialdried (magnesium sulfate)
  7. filtrationfiltered
  8. concentrationconcentrated in vacuo
  9. customThe resulting residue was purified by flash chromatography (4:6 ethyl acetate:hexane)

Quellen und Nachweise

ORD-Eintrag
ord-b9eb75f0351b433ebe3f4384b10a15d1
Quelldatensatz
uspto-grants-2006_11
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07141569B2

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