Ethyl Acetate → 1-[5-Chloro-2-(methylsulfonyl)benzyl]-2-imino-5-methyl-1,2-dihydropyridine-3-carboxamide hydrochloride

HRID 447811Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 447811
[NH2:1][C:2]1[N:10]=[CH:9][C:8]([CH3:11])=[CH:7][C:3]=1[C:4]([NH2:6])=[O:5].Br[CH2:13][C:14]1[CH:19]=[C:18]([Cl:20])[CH:17]=[CH:16][C:15]=1[S:21]([CH3:24])(=[O:23])=[O:22].C(OCC)(=O)C>CN(C)C=O>[ClH:20].[Cl:20][C:18]1[CH:17]=[CH:16][C:15]([S:21]([CH3:24])(=[O:23])=[O:22])=[C:14]([CH:19]=1)[CH2:13][N:10]1[CH:9]=[C:8]([CH3:11])[CH:7]=[C:3]([C:4]([NH2:6])=[O:5])[C:2]1=[NH:1]

Komponenten

5

Edukt 3

HCID 8857Ethyl AcetateHCID 668775512-(Bromomethyl)-4-chloro-1-(methylsulfonyl)benzeneHCID 668782802-Amino-5-methylnicotinamide

Produkt 1

HCID 669700871-[5-Chloro-2-(methylsulfonyl)benzyl]-2-imino-5-methyl-1,2-dihydropyridine-3-carboxamide hydrochlorideAusbeute 29,7 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

To a solution (3 ml) of 2-amino-5-methylnicotinamide (100 mg) in N,N-dimethylformamide was added 2-(bromomethyl)-4-chloro-1-(methylsulfonyl)benzene (220 mg), and the mixture was stirred at 100° C. for 4 hr. The mixture was allowed to cool to room temperature, ethyl acetate was added, and the precipitated crystals were collected by filtration. The obtained crystals were dissolved in 1N sodium hydroxide solution, and the solution was extracted with ethyl acetate. The organic layer was washed with saturated brine, and dried over magnesium sulfate. The solvent was evaporated under reduced pressure. The residue was purified by basic silica gel column chromatography (ethyl acetate:hexane=5:1→ethyl acetate:methanol=10:1). The obtained yellow solid was dissolved in methanol, 4N hydrogen chloride-ethyl acetate solution (1 ml) was added, and the mixture was crystallized from methanol-ethyl acetate to give the title compound (45 mg).

Aufarbeitung

  1. temperatureto cool to room temperature
  2. filtrationthe precipitated crystals were collected by filtration
  3. dissolutionThe obtained crystals were dissolved in 1N sodium hydroxide solution
  4. extractionthe solution was extracted with ethyl acetate
  5. washThe organic layer was washed with saturated brine
  6. dry with materialdried over magnesium sulfate
  7. customThe solvent was evaporated under reduced pressure
  8. customThe residue was purified by basic silica gel column chromatography (ethyl acetate:hexane=5:1→ethyl acetate:methanol=10:1)
  9. dissolutionThe obtained yellow solid was dissolved in methanol
  10. addition4N hydrogen chloride-ethyl acetate solution (1 ml) was added
  11. customthe mixture was crystallized from methanol-ethyl acetate

Quellen und Nachweise

ORD-Eintrag
ord-0dfcff04fd024acda374ae65685756e3
Quelldatensatz
uspto-grants-2013_07
Patentnummer
US08481569B2

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