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Sodium Hydroxide → (R)-5-(2-(5-fluoro-2-methoxyphenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylic acid

HRID 1631298
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1631298
Cl[C:2]1[CH:7]=[CH:6][N:5]2[N:8]=[CH:9][C:10]([C:11]([O:13]CC)=[O:12])=[C:4]2[N:3]=1.Cl.[F:17][C:18]1[CH:19]=[CH:20][C:21]([O:29][CH3:30])=[C:22]([C@H:24]2[CH2:28][CH2:27][CH2:26][NH:25]2)[CH:23]=1.C(N(C(C)C)CC)(C)C.[OH-].[Na+]>C(O)(C)C.CO>[F:17][C:18]1[CH:19]=[CH:20][C:21]([O:29][CH3:30])=[C:22]([C@H:24]2[CH2:28][CH2:27][CH2:26][N:25]2[C:2]2[CH:7]=[CH:6][N:5]3[N:8]=[CH:9][C:10]([C:11]([OH:13])=[O:12])=[C:4]3[N:3]=2)[CH:23]=1
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Komponenten

7

Edukt 4

HCID 14798Sodium HydroxideHCID 81531DiisopropylethylamineHCID 58063474Ethyl 5-chloropyrazolo(1,5-a)pyrimidine-3-carboxylateHCID 66519187(R)-2-(5-fluoro-2-methoxyphenyl)pyrrolidine hydrochloride

Produkt 1

HCID 66847828(R)-5-(2-(5-fluoro-2-methoxyphenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylic acidAusbeute 32,2 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 887MethanolLösungsmittelHCID 3776IsopropanolLösungsmittel

Reaktionsbedingungen

Temperatur
160 °C

Versuchsvorschrift

In a sealed tube, ethyl 5-chloropyrazolo[1,5-a]pyrimidine-3-carboxylate (Preparation B, 500 mg, 2.22 mmol), (R)-2-(5-fluoro-2-methoxyphenyl)pyrrolidine hydrochloride salt (513 mg, 2.22 mmol), and diisopropylethylamine (0.774 mL, 4.43 mmol) were combined in isopropanol (2 mL) and heated at 160° C. for 3 days. 2N NaOH (6 mL) and MeOH (5 mL) were added and the reaction mixture stirred at ambient temperature for 24 hours, followed by heating to 40° C. for 3 hours. The reaction was partially concentrated, treated with saturated aqueous NH4Cl (10 mL) and the mixture extracted with EtOAc. The combined organic extracts were filtered, concentrated and the residue purified by reverse phase chromatography eluting with 0-60% acetonitrile/water to yield the title compound as a pink solid (254 mg, 32.2% yield). MS (apci) m/z=357.0 (M+H).

Aufarbeitung

  1. temperatureby heating to 40° C. for 3 hours
  2. concentrationThe reaction was partially concentrated
  3. additiontreated with saturated aqueous NH4Cl (10 mL)
  4. extractionthe mixture extracted with EtOAc
  5. filtrationThe combined organic extracts were filtered
  6. concentrationconcentrated
  7. customthe residue purified by reverse phase chromatography
  8. washeluting with 0-60% acetonitrile/water

Quellen und Nachweise

ORD-Eintrag
ord-793fbbfcbde7495497ed75e320835a19
Quelldatensatz
uspto-grants-2014_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08791123B2

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