Thiophenol → {(S)-2-[4-(2,6-Difluorophenyl)-2,2-dimethyl-5-oxopiperazin-1-yl]-1-[(2S,4R)-4-methyl-5-oxotetrahydrofuran-2-yl]ethyl}carbamic acid t-butyl ester

HRID 1694970Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1694970
[C:1](=[O:4])([O-:3])[O-].[Cs+].[Cs+].[F:7][C:8]1[CH:13]=[CH:12][CH:11]=[C:10]([F:14])[C:9]=1[N:15]1[C:20](=[O:21])[CH2:19][N:18]([CH2:22][C@H:23]([NH:31]S(C2C=CC=CC=2[N+]([O-])=O)(=O)=O)[C@@H:24]2[CH2:28][C@@H:27]([CH3:29])C(=O)O2)[C:17]([CH3:45])([CH3:44])[CH2:16]1.C1(S)C=CC=CC=1.C(=O)(O)[O-].[Na+].[C:58](OC(OC(C)(C)C)=O)([O:60][C:61]([CH3:64])([CH3:63])[CH3:62])=[O:59].N[C@H]([C@@H]1C[C@@H](C)C(=O)O1)CN1C(C)(C)CN(C2C(F)=CC=CC=2F)C(=O)C1>C(#N)C.[Cl-].[Na+].O.C(OCC)(=O)C.O>[C:61]([O:60][C:58](=[O:59])[NH:31][C@H:23]([C@@H:24]1[CH2:28][C@@H:27]([CH3:29])[C:1](=[O:4])[O:3]1)[CH2:22][N:18]1[CH2:19][C:20](=[O:21])[N:15]([C:9]2[C:8]([F:7])=[CH:13][CH:12]=[CH:11][C:10]=2[F:14])[CH2:16][C:17]1([CH3:45])[CH3:44])([CH3:64])([CH3:63])[CH3:62]

Komponenten

11

Edukt 6

HCID 7969ThiophenolHCID 10796Cesium carbonateHCID 90495Di-tert-butyl dicarbonateHCID 516892Sodium BicarbonateHCID 66645601HCID 66645601, VerbindungHCID 666472864-{(S)-2-amino-2-[(2S,4R)-4-methyl-5-oxotetrahydrofuran-2-yl]ethyl}1-(2,6-difluorophenyl)-5,5-dimethylpiperazin-2-one

Produkt 1

HCID 66645687{(S)-2-[4-(2,6-Difluorophenyl)-2,2-dimethyl-5-oxopiperazin-1-yl]-1-[(2S,4R)-4-methyl-5-oxotetrahydrofuran-2-yl]ethyl}carbamic acid t-butyl esterAusbeute 75 %

Reagenzien, Katalysatoren, Lösungsmittel 4

HCID 962WaterLösungsmittelHCID 6342AcetonitrileLösungsmittelHCID 8857Ethyl AcetateLösungsmittelHCID 57417360Sodium chloride; waterLösungsmittel2×

Versuchsvorschrift

711 mg of cesium carbonate (2.18 mmol) was added to a solution of 1.03 g of N-{(S)-2-[4-(2,6-difluorophenyl)-2,2-dimethyl-5-oxopiperazin-1-yl]-1-[(2S,4R)-4-methyl-5-oxotetrahydrofuran-2-yl]ethyl}-2-nitrobenzenesulfonamide obtained in Example (93a) (1.82 mmol) and 0.56 ml of thiophenol (content: 95%) (5.45 mmol) in acetonitrile (18 ml) under a nitrogen atmosphere at room temperature, and the mixture was stirred at the same temperature for two hours. Brine was added to the reaction mixture, followed by extraction with methylene chloride. Then, the organic layer was dried over anhydrous magnesium sulfate. After filtration, the solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (elution solvent:methylene chloride/methanol=20/1-10/1). 170 mg of sodium bicarbonate (2.02 mmol) and 442 mg of di-t-butyl dicarbonate (2.02 mmol) were added to a solution of the resulting 4-{(S)-2-amino-2-[(2S,4R)-4-methyl-5-oxotetrahydrofuran-2-yl]ethyl}1-(2,6-difluorophenyl)-5,5-dimethylpiperazin-2-one in ethyl acetate (8 ml)-water (8 ml), and the mixture was stirred at room temperature for two hours. Brine was added to the reaction mixture, followed by extraction with ethyl acetate. Then, the organic layer was dried over anhydrous magnesium sulfate. After filtration, the solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (elution solvent:methylene chloride/ethyl acetate=3/1) to obtain 657 mg of the title compound (yield: 75%). Colorless solid.

Aufarbeitung

  1. extractionfollowed by extraction with methylene chloride
  2. dry with materialThen, the organic layer was dried over anhydrous magnesium sulfate
  3. filtrationAfter filtration
  4. customthe solvent was evaporated under reduced pressure
  5. customthe residue was purified by silica gel column chromatography (elution solvent:methylene chloride/methanol=20/1-10/1)
  6. stirringthe mixture was stirred at room temperature for two hours
  7. extractionfollowed by extraction with ethyl acetate
  8. dry with materialThen, the organic layer was dried over anhydrous magnesium sulfate
  9. filtrationAfter filtration
  10. customthe solvent was evaporated under reduced pressure
  11. customthe residue was purified by silica gel column chromatography (elution solvent:methylene chloride/ethyl acetate=3/1)

Quellen und Nachweise

ORD-Eintrag
ord-90cb96cdf03a48efbe622f59ca6c45ee
Quelldatensatz
uspto-grants-2012_04
Patentnummer
US08158790B2

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