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Sodium Hydroxide → HCID 178460997, Verbindung

HRID 2071828
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 2071828
[NH2:1][CH:2]1[C:25](=[O:26])[N:4]2[C:5]([C:22]([OH:24])=[O:23])=[C:6]([CH:9]([S:16][C:17]3[NH:21][N:20]=[N:19][N:18]=3)[CH2:10][CH2:11][S:12](=[O:15])(=[O:14])[NH2:13])[CH2:7][S:8][C@H:3]12.C(=O)(O)[O-].[Na+].[CH3:32][CH2:33][C:34](Cl)=[S:35].[OH-].[Na+]>CC(C)=O>[CH3:32][CH2:33][C:34]([NH:1][CH:2]1[C:25](=[O:26])[N:4]2[C:5]([C:22]([OH:24])=[O:23])=[C:6]([CH:9]([S:16][C:17]3[NH:18][N:19]=[N:20][N:21]=3)[CH2:10][CH2:11][S:12](=[O:14])(=[O:15])[NH2:13])[CH2:7][S:8][C@H:3]12)=[S:35]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 14798Sodium HydroxideHCID 516892Sodium BicarbonateHCID 21249692Methylthioacetyl chlorideHCID 178508099HCID 178508099, Verbindung

Produkt 1

HCID 178460997HCID 178460997, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 180
Acetone
Lösungsmittel
2×

Versuchsvorschrift

To a stirred, cooled (-20°) solution of 10.8 g. (0.026 mol.) of 7-amino-3-[1-(2-sulfamoylethyl)tetrazol-5-ylthiomethyl]-3-cephem-4-carboxylic acid in 220 ml. of 3% sodium bicarbonate and 220 ml. of acetone is dropwise added a solution of 3.66 g. (0.029 mol.) of methylthioacetyl chloride in 52 ml. of acetone, during which time the pH of the reaction mixture is maintained at 8.0 by addition of 10% sodium hydroxide. After addition the reaction mixture is stirred an additional 20 minutes at -15°, then is warmed to 25° and extracted with ether. The remaining aqueous phase is cooled, 250 ml. of ethyl acetate is added and the slurry is acidified with 3N hydrochloric acid. The layers are separated and the aqueous phase is extracted twice more with ethyl acetate. The combined extracts are dried (MgSO4) and evaporated to dryness to yield the title compound.

Aufarbeitung

  1. temperatureTo a stirred, cooled (-20°) solution of 10.8 g
  2. additionAfter addition the reaction mixture
  3. temperatureis warmed to 25°
  4. extractionextracted with ether
  5. temperatureThe remaining aqueous phase is cooled
  6. additionof ethyl acetate is added
  7. customThe layers are separated
  8. extractionthe aqueous phase is extracted twice more with ethyl acetate
  9. dry with materialThe combined extracts are dried (MgSO4)
  10. customevaporated to dryness

Quellen und Nachweise

ORD-Eintrag
ord-996ef95e59884f0e9ee14f3531f34e3c
Quelldatensatz
uspto-grants-1977_09
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US04048311

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