Potassium Carbonate → 5-Chloro-2-imino-1-[2-(methylsulfonyl)benzyl]-1,2-dihydropyridine-3-carboxamide hydrochloride

HRID 1015774Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1015774
[C:1]([CH:3]([CH:7]1[C:11]([Cl:12])=[C:10](Cl)C(=O)O1)[C:4]([NH2:6])=[O:5])#[N:2].Cl.[CH3:16][S:17]([C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=1[CH2:26][NH2:27])(=[O:19])=[O:18].C(=O)([O-])[O-].[K+].[K+].[OH-].[Na+]>C(O)C>[ClH:12].[Cl:12][C:11]1[CH:7]=[C:3]([C:4]([NH2:6])=[O:5])[C:1](=[NH:2])[N:27]([CH2:26][C:21]2[CH:22]=[CH:23][CH:24]=[CH:25][C:20]=2[S:17]([CH3:16])(=[O:19])=[O:18])[CH:10]=1

Komponenten

6

Edukt 4

HCID 11430Potassium CarbonateHCID 14798Sodium HydroxideHCID 5417922-Cyano-2-(3,4-dichloro-5(2H)-oxo-2-furyl)acetamideHCID 162183342-(Methanesulfonyl)benzylamine hydrochloride

Produkt 1

HCID 669701345-Chloro-2-imino-1-[2-(methylsulfonyl)benzyl]-1,2-dihydropyridine-3-carboxamide hydrochlorideAusbeute 20,1 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 702EthanolLösungsmittel

Versuchsvorschrift

2-Cyano-2-(3,4-dichloro-5-oxo-2,5-dihydrofuran-2-yl)acetamide (1.8 g), 1-[2-(methylsulfonyl)phenyl]methanamine hydrochloride (1.5 g) and potassium carbonate (1.8 g) were stirred in ethanol (30 ml) at 80° C. for 16 hr. The reaction mixture was poured into 1N aqueous sodium hydroxide solution, and extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over magnesium sulfate, and filtered. The solvent was evaporated under reduced pressure. The residue was purified by basic silica gel column chromatography (ethyl acetate). The obtained residue was dissolved in methanol, 4N hydrogen chloride-ethyl acetate solution (2 ml) was added, and the mixture was crystallized from methanol-ethyl acetate. The precipitated crystals were collected by filtration, and recrystallized to give the title compound (0.29 g).

Aufarbeitung

  1. extractionextracted with ethyl acetate
  2. washThe organic layer was washed with saturated brine
  3. dry with materialdried over magnesium sulfate
  4. filtrationfiltered
  5. customThe solvent was evaporated under reduced pressure
  6. customThe residue was purified by basic silica gel column chromatography (ethyl acetate)
  7. dissolutionThe obtained residue was dissolved in methanol
  8. addition4N hydrogen chloride-ethyl acetate solution (2 ml) was added
  9. customthe mixture was crystallized from methanol-ethyl acetate
  10. filtrationThe precipitated crystals were collected by filtration
  11. customrecrystallized

Quellen und Nachweise

ORD-Eintrag
ord-eae1b5d53c7b4edfb8a04b492a7887f1
Quelldatensatz
uspto-grants-2011_07
Patentnummer
US07985862B2

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