Sodium Chloride → Tert-butyl (3R)-3-(methanesulfonyloxy)pyrrolidine-1-carboxylate

HRID 5087

Reaktionsgleichung

Reaktionsgleichung von HRID 5087
C(N(CC)CC)C.[CH3:8][S:9](Cl)(=[O:11])=[O:10].[C:13]([O:17][C:18]([N:20]1[CH2:24][CH2:23][C@@H:22]([OH:25])[CH2:21]1)=[O:19])([CH3:16])([CH3:15])[CH3:14].[Cl-].[Na+]>O1CCCC1>[C:13]([O:17][C:18]([N:20]1[CH2:24][CH2:23][C@@H:22]([O:25][S:9]([CH3:8])(=[O:11])=[O:10])[CH2:21]1)=[O:19])([CH3:16])([CH3:14])[CH3:15]

Komponenten

6

Edukt 4

HCID 5234Sodium ChlorideHCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 6544479tert-Butyl (3R)-3-hydroxypyrrolidine-1-carboxylate

Produkt 1

HCID 10934372Tert-butyl (3R)-3-(methanesulfonyloxy)pyrrolidine-1-carboxylate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

16.91 ml of triethylamine and 9.36 ml of methanesulfonyl chloride were added, in that order, whilst ice-cooling, to a solution of 25 g of (3R)-1-t-butoxycarbonyl-3-hydroxypyrrolidine dissolved in 250 ml of dry tetrahydrofuran, and the mixture was stirred at 0° to 5° C. for 30 minutes and then at 15° C. for 30 minutes. At the end of this time, the mixture was poured into an aqueous solution of sodium chloride and extracted with ethyl acetate. The extract was washed with an aqueous solution of sodium chloride and dried over anhydrous magnesium sulfate. The solvent was then removed by distillation under reduced pressure, to give 3.10 g of the title compound as a colorless oil.

Aufarbeitung

  1. waitat 15° C. for 30 minutes
  2. extractionextracted with ethyl acetate
  3. washThe extract was washed with an aqueous solution of sodium chloride
  4. dry with materialdried over anhydrous magnesium sulfate
  5. customThe solvent was then removed by distillation under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-e65f24035a9c4030ba5dd6e5e6051a44
Quelldatensatz
uspto-grants-1993_09
Patentnummer
US05242914

Verknüpfte Notizen

Wird geladen…