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Hydrochloric Acid → methyl(2S,3R)-1-((S)-2-(5-bromo-1H-imidazol-2-yl)pyrrolidin-1-yl)-3-methoxy-1-oxobutan-2-ylcarbamate

HRID 1751703
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1751703
[Br:1][C:2]1[NH:6][C:5]([C@@H:7]2[CH2:11][CH2:10][CH2:9][N:8]2[C:12]([O:14]C(C)(C)C)=O)=[N:4][CH:3]=1.Cl.[CH3:20][O:21][C@H:22]([CH3:32])[C@H:23]([NH:27][C:28]([O:30][CH3:31])=[O:29])C(O)=O.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.CCN(C(C)C)C(C)C.[Li+].[OH-]>C(Cl)Cl.CO.CN(C=O)C>[Br:1][C:2]1[NH:6][C:5]([C@@H:7]2[CH2:11][CH2:10][CH2:9][N:8]2[C:12](=[O:14])[C@@H:23]([NH:27][C:28](=[O:29])[O:30][CH3:31])[C@H:22]([O:21][CH3:20])[CH3:32])=[N:4][CH:3]=1
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

10

Edukt 6

HCID 313Hydrochloric AcidHCID 3939Lithium HydroxideHCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 566051921,1-Dimethylethyl (2S)-2-(5-bromo-1H-imidazol-2-yl)-1-pyrrolidinecarboxylate
HCID 59540170
(2S,3R)-3-methoxy-2-(methoxycarbonylamino)butanoic acid

Produkt 1

HCID 86688356methyl(2S,3R)-1-((S)-2-(5-bromo-1H-imidazol-2-yl)pyrrolidin-1-yl)-3-methoxy-1-oxobutan-2-ylcarbamateAusbeute 100 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 887MethanolLösungsmittelHCID 6228DimethylformamideLösungsmittelHCID 6344DichloromethaneLösungsmittel

Reaktionsbedingungen

Temperatur
40 °C

Versuchsvorschrift

To a solution of (S)-tert-butyl 2-(5-bromo-1H-imidazol-2-yl)pyrrolidine-1-carboxylate (1.00 g, 3.2 mmol) in a mixture of CH2Cl2 (30 mL) and MeOH (5 mL) was added HCl (in dioxane, 4 M, 11.5 mL, 46.0 mmol). The solution was stirred at 40° C. for 1 h, cooled to room temperature, and concentrated to dryness under reduced pressure. To the crude intermediate suspended in CH2Cl2 (30 mL) was added (2S,3R)-3-methoxy-2-(methoxycarbonylamino)butanoic acid (0.67 g, 3.5 mmol), HATU (1.47 g, 3.8 mmol), and DIPEA (1.00 mL, 6.0 mmol), The resulting solution was stirred at room temperature for 24 h. DMF (2 mL) and aqueous LiOH (2.5 M, 1 mL) were added and the reaction was concentrated to dryness under reduced pressure. The crude material was diluted with EtOAc and washed with H2O and brine. The aqueous layers were back extracted with EtOAc. The combined organic layers were dried over Na2SO4 and concentrated under reduced pressure. The crude residue was purified by silica column chromatography (20% to 100% EtOAc (w/5% MeOH)/CH2Cl2) to afford methyl (2S,3R)-1-((S)-2-(5-bromo-1H-imidazol-2-yl)pyrrolidin-1-yl)-3-methoxy-1-oxobutan-2-ylcarbamate (1.2 g, 100%).

Aufarbeitung

  1. temperaturecooled to room temperature
  2. concentrationconcentrated to dryness under reduced pressure
  3. stirringThe resulting solution was stirred at room temperature for 24 h
  4. concentrationthe reaction was concentrated to dryness under reduced pressure
  5. additionThe crude material was diluted with EtOAc
  6. washwashed with H2O and brine
  7. extractionThe aqueous layers were back extracted with EtOAc
  8. dry with materialThe combined organic layers were dried over Na2SO4
  9. concentrationconcentrated under reduced pressure
  10. customThe crude residue was purified by silica column chromatography (20% to 100% EtOAc (w/5% MeOH)/CH2Cl2)

Quellen und Nachweise

ORD-Eintrag
ord-38e2c953ddd54240addb796be644bc28
Quelldatensatz
uspto-grants-2015_10
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09156823B2

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