N-butyl-4-[7-chloro-2-(4-fluorophenyl)pyrazolo[1,5-a]pyridin-3-yl]-2-pyrimidinamine → N-butyl-4-[2-(4-fluorophenyl)-7-methylpyrazolo[1,5-a]pyridin-3-yl]-2-pyrimidinamine

HRID 1797080Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1797080
[CH2:1]([NH:5][C:6]1[N:11]=[C:10]([C:12]2[C:13]([C:22]3[CH:27]=[CH:26][C:25]([F:28])=[CH:24][CH:23]=3)=[N:14][N:15]3[C:20](Cl)=[CH:19][CH:18]=[CH:17][C:16]=23)[CH:9]=[CH:8][N:7]=1)[CH2:2][CH2:3][CH3:4].[CH3:29][Zn]C>O1CCCC1>[CH2:1]([NH:5][C:6]1[N:11]=[C:10]([C:12]2[C:13]([C:22]3[CH:27]=[CH:26][C:25]([F:28])=[CH:24][CH:23]=3)=[N:14][N:15]3[C:20]([CH3:29])=[CH:19][CH:18]=[CH:17][C:16]=23)[CH:9]=[CH:8][N:7]=1)[CH2:2][CH2:3][CH3:4]

Komponenten

4

Edukt 2

HCID 22174847N-butyl-4-[7-chloro-2-(4-fluorophenyl)pyrazolo[1,5-a]pyridin-3-yl]-2-pyrimidinamineHCID 178477796HCID 178477796, Verbindung

Produkt 1

HCID 10292858N-butyl-4-[2-(4-fluorophenyl)-7-methylpyrazolo[1,5-a]pyridin-3-yl]-2-pyrimidinamineAusbeute 32 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Reaktionsbedingungen

Temperatur
60 °C

Versuchsvorschrift

To a solution of N-butyl-4-[7-chloro-2-(4-fluorophenyl)pyrazolo[1,5-a]pyridin-3-yl]-2-pyrimidinamine (80 mg, 0.20 mmol) in tetrahydrofuran (1 mL) was added dimethylzinc (304 μL, 2.0 M in toluene, 0.60 mmol) and tetrakis(triphenyl-phosphine)palladium(0) (23 mg, 0.02 mmol). The reaction mixture was heated at 60° C. for 16 hours. The reaction mixture was cooled, then quenched with ice water. The resultant mixture was extracted with ethyl acetate. The organic layer was washed with water and brine, then dried over magnesium sulfate. Filtration and concentration, followed by flash chromatography (3:1 hexanes:ethyl acetate) provided N-butyl-4-[2-(4-fluorophenyl)-7-methylpyrazolo[1,5-a]pyridin-3-yl]-2-pyrimidinamine (24 mg, 32%) as a yellow solid. Rf 0.33 (2:1 hexanes:ethyl acetate); 1H NMR (400 MHz, CDCl3) δ 8.32 (d, 1H), 8.04 (d, 1H), 7.64 (m, 2H), 7.27 (m, 1H), 7.13 (t, 2H), 6.77 (d, 1H), 6.31 (d, 1H), 5.17 (br, 1H), 3.48 (m, 2H), 2.80 (s, 3H), 1.65 (m, 2H), 1.45 (m, 2H), 0.97 (t, 3H); MS m/z 376 (M+1).

Aufarbeitung

  1. temperatureThe reaction mixture was cooled
  2. customquenched with ice water
  3. extractionThe resultant mixture was extracted with ethyl acetate
  4. washThe organic layer was washed with water and brine
  5. dry with materialdried over magnesium sulfate
  6. filtrationFiltration and concentration

Quellen und Nachweise

ORD-Eintrag
ord-9a75ff2a14ac4adb825a4e0f0372cd23
Quelldatensatz
uspto-grants-2006_04
Patentnummer
US07034030B2

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