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Ethyl Acetate → 1-[3-Bromo-4-(methylsulfonyl)benzyl]-5-chloro-2-imino-1,2-dihydropyridine-3-carboxamide hydrochloride

HRID 447810
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 447810
[NH2:1][C:2]1[N:10]=[CH:9][C:8]([Cl:11])=[CH:7][C:3]=1[C:4]([NH2:6])=[O:5].[Br:12][C:13]1[CH:18]=[C:17]([CH2:19]Br)[CH:16]=[CH:15][C:14]=1[S:21]([CH3:24])(=[O:23])=[O:22].C(OCC)(=O)C>CN(C=O)C>[ClH:11].[Br:12][C:13]1[CH:18]=[C:17]([CH:16]=[CH:15][C:14]=1[S:21]([CH3:24])(=[O:23])=[O:22])[CH2:19][N:10]1[CH:9]=[C:8]([Cl:11])[CH:7]=[C:3]([C:4]([NH2:6])=[O:5])[C:2]1=[NH:1]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

5

Edukt 3

HCID 8857Ethyl AcetateHCID 179669082-Bromo-4-(bromomethyl)-1-(methylsulfonyl)benzeneHCID 668768832-Amino-5-chloronicotinamide

Produkt 1

HCID 669700571-[3-Bromo-4-(methylsulfonyl)benzyl]-5-chloro-2-imino-1,2-dihydropyridine-3-carboxamide hydrochlorideAusbeute 49 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228
Dimethylformamide
Lösungsmittel

Versuchsvorschrift

A solution of 2-amino-5-chloronicotinamide (300 mg) and 2-bromo-4-(bromomethyl)-1-(methylsulfonyl)benzene (860 mg) in DMF (5 ml) was stirred at 100° C. for 6 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=9:1→-ethyl acetate:methanol=9:1). The obtained yellow solid was dissolved in methanol, 4N hydrogen chloride-ethyl acetate solution was added, and the precipitated crystals were collected by filtration, and recrystallized to give the title compound (195 mg).

Aufarbeitung

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

Quellen und Nachweise

ORD-Eintrag
ord-b76acefc9d4d43588bf3faecd88d1404
Quelldatensatz
uspto-grants-2013_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08481569B2

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