Cesium carbonate → 3-{[6-(azetidin-1-ylcarbonyl)pyridin-3-yl]oxy}-5-[(1-methylethyl)oxy]-N-(5-methylpyrazin-2-yl)benzamide

HRID 1990223Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1990223
C(=O)([O-])[O-].[Cs+].[Cs+].[OH:7][C:8]1[CH:9]=[C:10]([CH:21]=[C:22]([O:24][CH:25]([CH3:27])[CH3:26])[CH:23]=1)[C:11]([NH:13][C:14]1[CH:19]=[N:18][C:17]([CH3:20])=[CH:16][N:15]=1)=[O:12].[N:28]1([C:32]([C:34]2[CH:39]=[CH:38][C:37](Br)=[CH:36][N:35]=2)=[O:33])[CH2:31][CH2:30][CH2:29]1>CC(N(C)C)=O>[N:28]1([C:32]([C:34]2[N:35]=[CH:36][C:37]([O:7][C:8]3[CH:9]=[C:10]([CH:21]=[C:22]([O:24][CH:25]([CH3:27])[CH3:26])[CH:23]=3)[C:11]([NH:13][C:14]3[CH:19]=[N:18][C:17]([CH3:20])=[CH:16][N:15]=3)=[O:12])=[CH:38][CH:39]=2)=[O:33])[CH2:31][CH2:30][CH2:29]1

Komponenten

5

Edukt 3

HCID 10796Cesium carbonateHCID 536296172-(Azetidin-1-ylcarbonyl)-5-bromopyridineHCID 591271623-Hydroxy-N-(5-methylpyrazin-2-yl)-5-[(propan-2-yl)oxy]benzamide

Produkt 1

HCID 160398643-{[6-(azetidin-1-ylcarbonyl)pyridin-3-yl]oxy}-5-[(1-methylethyl)oxy]-N-(5-methylpyrazin-2-yl)benzamideAusbeute 32,2 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 31374DimethylacetamideLösungsmittel

Reaktionsbedingungen

Temperatur
160 °C

Versuchsvorschrift

Cesium carbonate (489 mg, 1.5 mmol) was added to a solution of 3-hydroxy-5-[(1-methylethyl)oxy]-N-(5-methylpyrazin-2-yl)benzamide (144 mg, 0.5 mmol) and 2-(azetidin-1-ylcarbonyl)-5-bromopyridine (181 mg, 0.75 mmol) and bromotris(triphenylphosphine)copper (93 mg, 0.1 mmol) in DMA (5 mL) and the stirred mixture heated at 160° C. in a microwave reactor for 4 hours. The mixture was cooled to RT and ambient pressure, partitioned between water (75 mL) and ethyl acetate (50 mL), the organic layer washed with brine, dried (MgSO4) and evaporated in vacuo. The residue was chromatographed on silica, eluting with 75% ethyl acetate in isohexane, to give the desired compound (crystallised from ether) (72 mg). 1H NMR δ (CDCl3): 1.3 (d, 6H), 2.3 (m, 2H), 2.5 (s, 3H), 4.2 (t, 2H), 4.5 (m, 1H), 4.65 (t, 2H), 6.7 (s, 1H), 7.05 (s, 1H), 7.2 (s, 1H), 7.3 (d, 1H), 8.0 (br, 2H), 8.3 (br, 2H) and 9.45 (s, 1H). m/z 448 (M+H)+. Mpt (melting onset) 125.7° C.

Aufarbeitung

  1. temperatureThe mixture was cooled to RT
  2. customambient pressure, partitioned between water (75 mL) and ethyl acetate (50 mL)
  3. washthe organic layer washed with brine
  4. dry with materialdried (MgSO4)
  5. customevaporated in vacuo
  6. customThe residue was chromatographed on silica
  7. washeluting with 75% ethyl acetate in isohexane

Quellen und Nachweise

ORD-Eintrag
ord-013502608a1a45a99c5de5c821efbc16
Quelldatensatz
uspto-grants-2010_01
Patentnummer
US07642259B2

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