Hydrogen Peroxide → Tert-butyl 3-oxo-2-oxa-8-azaspiro[4.5]decane-8-carboxylate

HRID 47342

Reaktionsgleichung

Reaktionsgleichung von HRID 47342
[O:1]=[C:2]1[CH2:5][C:4]2([CH2:10][CH2:9][N:8]([C:11]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])[CH2:7][CH2:6]2)[CH2:3]1.OO.[OH-].[Na+].O.O.O.O.O.S([O-])([O-])(=[O:29])=S.[Na+].[Na+]>CO.O.C(OCC)(=O)C>[O:29]=[C:2]1[CH2:3][C:4]2([CH2:10][CH2:9][N:8]([C:11]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])[CH2:7][CH2:6]2)[CH2:5][O:1]1

Komponenten

8

Edukt 4

HCID 784Hydrogen PeroxideHCID 14798Sodium HydroxideHCID 61475Sodium Thiosulfate PentahydrateHCID 11195798Tert-butyl 2-oxo-7-azaspiro[3.5]nonane-7-carboxylate

Produkt 1

HCID 22744536Tert-butyl 3-oxo-2-oxa-8-azaspiro[4.5]decane-8-carboxylate

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 887MethanolLösungsmittelHCID 962WaterLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

567 ml solution of 37.8 g tert-butyl 2-oxo-7-azaspiro[3.5]nonane-7-carboxylate in methanol was cooled on ice water, and 43 g of 30% aqueous hydrogen peroxide was added dropwise thereinto. 63 ml of 1 N aqueous sodium hydroxide was added dropwise thereto, and the mixture was stirred at room temperature for 2 hr. 1000 ml ethyl acetate, 600 ml water and 100 ml saturated aqueous sodium thiosulfate pentahydrate were added thereto, and the organic layer was recovered. The extracted solution was washed with brine, dried over anhydrous magnesium sulfate, and then filtered. The filtrate was evaporated to give 28.4 g of tert-butyl 3-oxo-2-oxa-8-azaspiro[4.5]decane-8-carboxylate.

Aufarbeitung

  1. additionwas added dropwise
  2. customthe organic layer was recovered
  3. washThe extracted solution was washed with brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. filtrationfiltered
  6. customThe filtrate was evaporated

Quellen und Nachweise

ORD-Eintrag
ord-a505a4a908504f4f8d513ef2b414c003
Quelldatensatz
uspto-grants-2004_03
Patentnummer
US06699870B2

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