Sodium Carbonate → 4-(5-amino-6-(5-phenyl-1,3,4-oxadiazol-2-yl)pyrazin-2-yl)-N,N-dimethylbenzamide

HRID 78586Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 78586
Br[C:2]1[N:3]=[C:4]([C:9]2[O:10][C:11]([C:14]3[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=3)=[N:12][N:13]=2)[C:5]([NH2:8])=[N:6][CH:7]=1.[CH3:20][N:21]([CH3:33])[C:22]([C:24]1[CH:29]=[CH:28][C:27](B(O)O)=[CH:26][CH:25]=1)=[O:23].C(=O)([O-])[O-].[Na+].[Na+].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>C(#N)C.O.CCOC(C)=O.[Pd]>[NH2:8][C:5]1[N:6]=[CH:7][C:2]([C:27]2[CH:28]=[CH:29][C:24]([C:22]([N:21]([CH3:33])[CH3:20])=[O:23])=[CH:25][CH:26]=2)=[N:3][C:4]=1[C:9]1[O:10][C:11]([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)=[N:12][N:13]=1

Komponenten

9

Edukt 4

HCID 10340Sodium CarbonateHCID 11776TriphenylphosphineHCID 35037674-(Dimethylcarbamoyl)phenylboronic AcidHCID 580843425-Bromo-3-(5-phenyl-1,3,4-oxadiazol-2-yl)pyrazin-2-amine

Produkt 1

HCID 594716304-(5-amino-6-(5-phenyl-1,3,4-oxadiazol-2-yl)pyrazin-2-yl)-N,N-dimethylbenzamideAusbeute 56,4 %

Reagenzien, Katalysatoren, Lösungsmittel 4

HCID 23938PalladiumKatalysatorHCID 962WaterLösungsmittel2×HCID 6342AcetonitrileLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Reaktionsbedingungen

Temperatur
110 °C

Versuchsvorschrift

5-bromo-3-(5-phenyl-1,3,4-oxadiazol-2-yl)pyrazin-2-amine (150 mg, 0.4715 mmol), [4-(dimethylcarbamoyl)phenyl]boronic acid (91.00 mg, 0.4715 mmol), sodium carbonate (99.95 mg, 0.9430 mmol) and palladium; triphenylphosphane (54.48 mg, 0.04715 mmol) in a mixture of acetonitrile (1.5 mL) and water (1.5 mL) was heated at 110° C. in the microwave for 30 minutes. The reaction was diluted with water and EtOAc and the layers separated. The combined organics were dried (MgSO4), filtered and concentrated in vacuo. The residue was purified by column chromatography (ISCO Companion™, 12 g column, 0-100% EtOAc/Petroleum ether) to give the desired product (102.8 mg, 56% Yield). 1H NMR (400.0 MHz, DMSO) d 2.98 (6H, m), 7.55 (2H, m), 7.69-7.71 (3H, m), 7.83 (2H, br s), 8.17-8.20 (4H, m), 9.00 (1H, s) ppm; MS (ES+) 387.13

Aufarbeitung

  1. customthe layers separated
  2. dry with materialThe combined organics were dried (MgSO4)
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. customThe residue was purified by column chromatography (ISCO Companion™, 12 g column, 0-100% EtOAc/Petroleum ether)

Quellen und Nachweise

ORD-Eintrag
ord-85b874123b7e4574b55e50e0727a244f
Quelldatensatz
uspto-grants-2014_09
Patentnummer
US08841308B2

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