Water → HCID 59556992, Verbindung

HRID 1967244Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1967244
[OH:1][C@@H:2]1[C@H:6]([CH3:7])[NH:5][C:4](=[O:8])[CH2:3]1.N1C(C)=CC=CC=1C.FC(F)(F)S(O[Si:23]([C:26]([CH3:29])([CH3:28])[CH3:27])([CH3:25])[CH3:24])(=O)=O.O>C1COCC1>[Si:23]([O:1][C@@H:2]1[C@H:6]([CH3:7])[NH:5][C:4](=[O:8])[CH2:3]1)([C:26]([CH3:29])([CH3:28])[CH3:27])([CH3:25])[CH3:24]

Komponenten

6

Edukt 4

HCID 962WaterHCID 79372,6-LutidineHCID 123564tert-Butyldimethylsilyl trifluoromethanesulphonateHCID 11062347(4S,5S)-4-hydroxy-5-methylpyrrolidin-2-one

Produkt 1

HCID 59556992HCID 59556992, VerbindungAusbeute 76 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

A solution of (4S,5S)-4-hydroxy-5-methylpyrrolidin-2-one (3.0 g) in THF (50 mL) was cooled to 0° C., 2,6-lutidine (4.55 mL) and tert-butyldimethylsilyl trifluoromethanesulfonate (6.6 mL) were added thereto and, after warming to room temperature, the mixture was stirred at room temperature for 18 hr. Water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: hexane/ethyl acetate=9/1→1/2) to give the title compound as a colorless solid (yield: 4.54 g, 76%).

Aufarbeitung

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe extract was washed with saturated brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (eluent: hexane/ethyl acetate=9/1→1/2)

Quellen und Nachweise

ORD-Eintrag
ord-a73c4c857c984afdb606e8acf87f363c
Quelldatensatz
uspto-grants-2013_04
Patentnummer
US08420694B2

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