N-bromobutanimide → N-[5-bromo-6-(2-hydroxyethoxy)pyrimidin-4-yl]-4-tert-butylbenzenesulfonamide

HRID 2309

Reaktionsgleichung

Reaktionsgleichung von HRID 2309
[C:1]([C:5]1[CH:10]=[CH:9][C:8]([S:11]([NH:14][C:15]2[CH:20]=[C:19]([O:21][CH2:22][CH2:23][OH:24])[N:18]=[CH:17][N:16]=2)(=[O:13])=[O:12])=[CH:7][CH:6]=1)([CH3:4])([CH3:3])[CH3:2].[Br:25]N1C(=O)CCC1=O.S([O-])(O)=O.[Na+]>CN(C)C=O>[Br:25][C:20]1[C:15]([NH:14][S:11]([C:8]2[CH:9]=[CH:10][C:5]([C:1]([CH3:4])([CH3:2])[CH3:3])=[CH:6][CH:7]=2)(=[O:12])=[O:13])=[N:16][CH:17]=[N:18][C:19]=1[O:21][CH2:22][CH2:23][OH:24]

Komponenten

5

Edukt 3

HCID 67184N-bromobutanimideHCID 117831024-tert-butyl-N-[6-(2-hydroxyethoxy)pyrimidin-4-yl)benzenesulfonamideHCID 23665763Sodium Bisulfite

Produkt 1

HCID 11026374N-[5-bromo-6-(2-hydroxyethoxy)pyrimidin-4-yl]-4-tert-butylbenzenesulfonamideAusbeute 65,7 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

To a solution of 4-tert-butyl-N-[6-(2-hydroxyethoxy)pyrimidin-4-yl)benzenesulfonamide (210 mg) in dimethylformamide (4 ml) is added N-bromosuccinimide (116 mg), and the mixture is stirred at room temperature for one hour. The mixture is treated with aqueous sodium hydrogen sulfite solution, and extracted with ethyl acetate. The ethyl acetate layer is washed, dried and evaporated to remove the solvent. The residue is purified by silica gel column chromatography (solvent; chloroform/methanol=40:1), and recrystallized from hexane/ethyl acetate to give N-[5-bromo-6-(2-hydroxyethoxy)pyrimidin-4-yl]-4-tert-butylbenzenesulfonamide (169 mg).

Aufarbeitung

  1. extractionextracted with ethyl acetate
  2. washThe ethyl acetate layer is washed
  3. customdried
  4. customevaporated
  5. customto remove the solvent
  6. customThe residue is purified by silica gel column chromatography (solvent; chloroform/methanol=40:1)
  7. customrecrystallized from hexane/ethyl acetate

Quellen und Nachweise

ORD-Eintrag
ord-da9e15d8493a44cfbbae58022cf084ac
Quelldatensatz
uspto-grants-1998_03
Patentnummer
US05728706

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