Methane → HCID 21530757, Verbindung

HRID 1658814Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1658814
C(N1C(=O)CCC1=O)(=O)C.C[Si](C)(C)N1C(=O)CCC1=O.C[Si](C)(C)[O:24][C:25]([CH:27]([N:31]1[CH:34]([S:35][N:36]2[C:40](=[O:41])[CH2:39][CH2:38][C:37]2=[O:42])[CH:33]([NH:43][C:44](=[O:52])[CH2:45][C:46]2[CH:51]=[CH:50][CH:49]=[CH:48][CH:47]=2)[C:32]1=[O:53])[C:28]([CH3:30])=[CH2:29])=[O:26].C>C1C=CC=CC=1>[C:25]([CH:27]([N:31]1[CH:34]([S:35][N:36]2[C:37](=[O:42])[CH2:38][CH2:39][C:40]2=[O:41])[CH:33]([NH:43][C:44](=[O:52])[CH2:45][C:46]2[CH:47]=[CH:48][CH:49]=[CH:50][CH:51]=2)[C:32]1=[O:53])[C:28]([CH3:30])=[CH2:29])([OH:26])=[O:24]

Komponenten

6

Edukt 4

HCID 297MethaneHCID 11457741N-acetylsuccinimideHCID 116654792,5-Pyrrolidinedione, 1-(trimethylsilyl)-HCID 86733530HCID 86733530, Verbindung

Produkt 1

HCID 21530757HCID 21530757, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 241BenzeneLösungsmittel2×

Versuchsvorschrift

A mixture of 5.3 g of benzylpenicillin-S-sulphoxide, 50 g of N-acetylsuccinimide, 12.5 ml of N-trimethylsilylsuccinimide and 35 ml of benzene was refluxed for 16 hours. The reaction mixture (containing 1-(1-trimethylsilyloxycarbonyl-2-methylprop-2-enyl)-3-phenylacetamido-4-succinimidothio-azetidin-2-one) was then allowed to cool to room temperature, diluted with benzene (200 ml), treated with decolourizing charcoal, and evaporated to dryness. The residue was purified by column chromatography on silica gel using 5% acetic acid in ethyl acetate as eluent. The fractions containing the major component of the original residue were combined, evaporated to dryness and the residue triturated with diethyl ether. The precipitate was chromatographed a second time to obtain 1-(1-carboxy-2-methylprop-2-enyl)-3-phenylacetamido-4-succinimidothio-azetidin-2-one in a pure state. The structure was confirmed by PMR and IR spectroscopy.

Aufarbeitung

  1. temperaturewas refluxed for 16 hours
  2. customevaporated to dryness
  3. customThe residue was purified by column chromatography on silica gel using 5% acetic acid in ethyl acetate as eluent
  4. additionThe fractions containing the major component of the original residue
  5. customevaporated to dryness
  6. customthe residue triturated with diethyl ether
  7. customThe precipitate was chromatographed a second time

Quellen und Nachweise

ORD-Eintrag
ord-55742722bba5480da7cfc2aa90e4220b
Quelldatensatz
uspto-grants-1976_06
Patentnummer
US03966738

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