m-Chloroperbenzoic acid → 2,2,2-Trichloroethyl 2-methyl-7-(2-phenylacetamido)-3-cephem-4-carboxylate-1-oxide

HRID 851582Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 851582
ClC1C=CC=C(C(OO)=[O:9])C=1.[CH3:12][CH:13]1[CH:18]=[C:17]([C:19]([O:21][CH2:22][C:23]([Cl:26])([Cl:25])[Cl:24])=[O:20])[N:16]2[C:27](=[O:39])[CH:28]([NH:29][C:30](=[O:38])[CH2:31][C:32]3[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=3)[C@H:15]2[S:14]1>C(Cl)(Cl)Cl>[CH3:12][CH:13]1[CH:18]=[C:17]([C:19]([O:21][CH2:22][C:23]([Cl:24])([Cl:25])[Cl:26])=[O:20])[N:16]2[C:27](=[O:39])[CH:28]([NH:29][C:30](=[O:38])[CH2:31][C:32]3[CH:33]=[CH:34][CH:35]=[CH:36][CH:37]=3)[C@H:15]2[S:14]1=[O:9]

Komponenten

4

Edukt 2

HCID 70297m-Chloroperbenzoic acidHCID 705273932,2,2-Trichloroethyl 2-methyl-7-(2-phenylacetamido)-3-cephem-4-carboxylate

Produkt 1

HCID 705266812,2,2-Trichloroethyl 2-methyl-7-(2-phenylacetamido)-3-cephem-4-carboxylate-1-oxide

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6212ChloroformLösungsmittel2×

Versuchsvorschrift

A solution of 3-chloroperbenzoic acid (0.44 g.) in chloroform (5 ml.) was dropwise added under ice-cooling to a solution of 2,2,2-trichloroethyl 2-methyl-7-(2-phenylacetamido)-3-cephem-4-carboxylate (0.92 g.) in chloroform (10 ml.) and the mixture was stirred for 1.5 hours at the same temperature. After the reaction, the precipitating crystals were filtered off and the filtrate was washed in turn with a sodium bicarbonate aqueous solution and a saturated sodium chloride aqueous solution, followed by drying over magnesium sulfate, and then the solvent was distilled off. The residue was crystallized using a small amount of ether to give 2,2,2-trichloroethyl 2-methyl-7-(2-phenylacetamido)-3-cephem-4-carboxylate-1-oxide, mp 173° to 175° C.

Aufarbeitung

  1. customAfter the reaction
  2. filtrationthe precipitating crystals were filtered off
  3. washthe filtrate was washed in turn with a sodium bicarbonate aqueous solution
  4. dry with materialby drying over magnesium sulfate
  5. distillationthe solvent was distilled off
  6. customThe residue was crystallized

Quellen und Nachweise

ORD-Eintrag
ord-7e71c1a85606435fa27b6a2a93a7b29b
Quelldatensatz
uspto-grants-1983_05
Patentnummer
US04385176

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