Cesium carbonate → 2-[(5-Chloro-2-{[3-methyl-1-(1-methylethyl)-1H-pyrazol-5-yl]amino}-4-pyridinyl)amino]-4-fluorobenzoic acid

HRID 1472590

Reaktionsgleichung

Reaktionsgleichung von HRID 1472590
Cl[C:2]1[CH:7]=[C:6](I)[C:5]([Cl:9])=[CH:4][N:3]=1.[NH2:10][C:11]1[CH:18]=[C:17]([F:19])[CH:16]=[CH:15][C:12]=1C#N.[O-]P(OP(OP([O-])([O-])=O)([O-])=O)(=O)[O-].[K+].[K+].[K+].[K+].[K+].C1C=CC(P(C2C(OC3C(P(C4C=CC=CC=4)C4C=CC=CC=4)=CC=CC=3)=CC=CC=2)C2C=CC=CC=2)=CC=1.[CH3:77][C:78]1[CH:82]=[C:81]([NH2:83])[N:80]([CH:84]([CH3:86])[CH3:85])[N:79]=1.[C:87](=[O:90])([O-])[O-:88].[Cs+].[Cs+].[OH-].[Na+]>O1CCOCC1.C([O-])(=O)C.[Pd+2].C([O-])(=O)C.C(OCC)(=O)C>[Cl:9][C:5]1[C:6]([NH:10][C:11]2[CH:18]=[C:17]([F:19])[CH:16]=[CH:15][C:12]=2[C:87]([OH:88])=[O:90])=[CH:7][C:2]([NH:83][C:81]2[N:80]([CH:84]([CH3:86])[CH3:85])[N:79]=[C:78]([CH3:77])[CH:82]=2)=[N:3][CH:4]=1

Komponenten

11

Edukt 7

HCID 10796Cesium carbonateHCID 14798Sodium HydroxideHCID 61695Pentapotassium TriphosphateHCID 1210181-Isopropyl-3-methyl-1H-pyrazol-5-amineHCID 4285986Bis[2-(diphenylphosphino)phenyl] ether2×HCID 99421582-Amino-4-fluorobenzonitrileHCID 534009652,5-Dichloro-4-iodopyridine

Produkt 1

HCID 667696182-[(5-Chloro-2-{[3-methyl-1-(1-methylethyl)-1H-pyrazol-5-yl]amino}-4-pyridinyl)amino]-4-fluorobenzoic acidAusbeute 33,9 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 167845palladium(II) acetateKatalysator2×HCID 8857Ethyl AcetateLösungsmittelHCID 312751,4-DioxaneLösungsmittel

Versuchsvorschrift

To a degassed solution of 2,5-dichloro-4-iodopyridine (5 g, 18.26 mmol), 2-amino-4-fluorobenzonitrile (2.485 g, 18.26 mmol) and potassium triphosphate (11.63 g, 54.8 mmol) in 1,4-dioxane (60 ml) stirred under nitrogen at the room temperature was added DPEPhos (0.787 g, 1.460 mmol) and palladium acetate (0.164 g, 0.730 mmol). The reaction mixture was stirred at the reflux for 18 hr. The reaction mixture was filtered. 3-Methyl-1-(1-methylethyl)-1H-pyrazol-5-amine (2.54 g, 18.26 mmol) and cesium carbonate (17.84 g, 54.8 mmol) were added. The reaction mixture was degassed and palladium acetate (0.164 g, 0.730 mmol) and DPEPhos (0.787 g, 1.460 mmol) were added. The reaction mixture was refluxed overnight. The reaction mixture was filtered. NaOH (60 mL, 60.0 mmol) was added and the reaction mixture refluxed overnight. Ethyl acetate was added and the layers were separated. The combined organics were washed with 1 M NaOH (40 ml). The combined aqueous layers were washed with ethyl acetate, and neutralized with acetic acid. 2-[(5-Chloro-2-{[3-methyl-1-(1-methylethyl)-1H-pyrazol-5-yl]amino}-4-pyridinyl)amino]-4-fluorobenzoic acid (2.5 g, 6.19 mmol, 33.9% yield) was isolated by filtration as a yellow solid. 1H NMR (400 MHz, DMSO-d6) ppm 1.29 (d, J=6.57 Hz, 6 H) 2.12 (s, 3 H) 4.43 (quin, J=6.57 Hz, 1 H) 5.99 (s, 1 H) 6.86 (s, 1 H) 6.87-6.93 (m, 1 H) 7.34 (dd, J=11.62, 2.53 Hz, 1 H) 8.03-8.10 (m, 2 H) 8.62 (s, 1 H) 10.65 (br. s., 1 H); HPLC Rt=2.57 min, MS (ESI): 404.2 [M+H]+.

Aufarbeitung

  1. temperaturereflux for 18 hr
  2. filtrationThe reaction mixture was filtered
  3. customThe reaction mixture was degassed
  4. temperatureThe reaction mixture was refluxed overnight
  5. filtrationThe reaction mixture was filtered
  6. temperaturethe reaction mixture refluxed overnight
  7. customthe layers were separated
  8. washThe combined organics were washed with 1 M NaOH (40 ml)
  9. washThe combined aqueous layers were washed with ethyl acetate

Quellen und Nachweise

ORD-Eintrag
ord-7a4c21c10ea44dfc811f3bd5495ed04d
Quelldatensatz
uspto-grants-2015_04
Patentnummer
US09012479B2

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