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

HRID 447819

반응식

HRID 447819 반응식
[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][O:17][C:18]1[CH:19]=[CH:20][C:21]([S:26]([CH3:29])(=[O:28])=[O:27])=[C:22]([CH2:24][NH2:25])[CH:23]=1.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:25]([CH2:24][C:22]2[CH:23]=[C:18]([O:17][CH3:16])[CH:19]=[CH:20][C:21]=2[S:26]([CH3:29])(=[O:28])=[O:27])[CH:10]=1

참가 물질

6

반응물 4

HCID 11430Potassium CarbonateHCID 14798Sodium HydroxideHCID 5417922-Cyano-2-(3,4-dichloro-5(2H)-oxo-2-furyl)acetamideHCID 66877686(5-Methoxy-2-(methylsulfonyl)phenyl)methanamine hydrochloride

생성물 1

HCID 669695825-Chloro-2-imino-1-[5-methoxy-2-(methylsulfonyl)benzyl]-1,2-dihydropyridine-3-carboxamide hydrochloride수율 84.4%

시약·촉매·용매 1

HCID 702Ethanol용매

실험 절차

(Step 4) 2-Cyano-2-(3,4-dichloro-5-oxo-2,5-dihydrofuran-2-yl)acetamide (2.33 g), 1-[5-methoxy-2-(methylsulfonyl)phenyl]methanamine hydrochloride obtained in Step 3 (3.0 g) and potassium carbonate (4.12 g) were stirred in ethanol (30 ml) at 85° C. for 16 hr. The reaction mixture was treated with 1N sodium hydroxide solution, and 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). The obtained residue was dissolved in methanol, and 4N hydrogen chloride-ethyl acetate solution (4 ml) was added. The mixture was crystallized from methanol-ethyl acetate, and the precipitated crystals were collected by filtration, and recrystallized to give the title compound (1.7 g).

후처리

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

출처 및 근거

ORD 기록
ord-ffd58bf34b6441bebdf9cae74332478c
출처 데이터셋
uspto-grants-2013_07
특허 번호
US08481569B2

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