StartseiteMCPWorkbenchSkills
StartseiteWorkbenchBenachrichtigungenMein Bereich
llms.txt · MCP-AnleitungDatenschutz · Nutzungsbedingungen · Supportv1.8.0
  1. Startseite
  2. /Reaktion

p-Nitrobenzyl 7-{2(2-formamido-4-thiazolyl)-2-methoxyiminoacetamido}-3-chloro-3-cephem-4-carboxylate → 7-{2-(2-Formamido-4-thiazolyl)-2-methoxyiminoacetamido}-3-chloro-3-cephem-4-carboxylic acid

HRID 434934
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 434934
[CH:1]([NH:3][C:4]1[S:5][CH:6]=[C:7]([C:9](=[N:36][O:37][CH3:38])[C:10]([NH:12][CH:13]2[C:34](=[O:35])[N:15]3[C:16]([C:21]([O:23]CC4C=CC([N+]([O-])=O)=CC=4)=[O:22])=[C:17]([Cl:20])[CH2:18][S:19][C@H:14]23)=[O:11])[N:8]=1)=[O:2]>CO.O1CCCC1.[C].[Pd]>[CH:1]([NH:3][C:4]1[S:5][CH:6]=[C:7]([C:9](=[N:36][O:37][CH3:38])[C:10]([NH:12][CH:13]2[C:34](=[O:35])[N:15]3[C:16]([C:21]([OH:23])=[O:22])=[C:17]([Cl:20])[CH2:18][S:19][C@H:14]23)=[O:11])[N:8]=1)=[O:2]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

5

Edukt 1

HCID 131712431p-Nitrobenzyl 7-{2(2-formamido-4-thiazolyl)-2-methoxyiminoacetamido}-3-chloro-3-cephem-4-carboxylate

Produkt 1

HCID 1317124327-{2-(2-Formamido-4-thiazolyl)-2-methoxyiminoacetamido}-3-chloro-3-cephem-4-carboxylic acidAusbeute 78,2 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 178418390HCID 178418390, VerbindungKatalysatorHCID 887MethanolLösungsmittel
HCID 8028
Tetrahydrofuran
Lösungsmittel

Versuchsvorschrift

p-Nitrobenzyl 7-{2-(2-formamido-4-thiazolyl)-2-methoxyiminoacetamido}-3-chloro-3-cephem-4-carboxylate (syn isomer, 0.8 g.) was dissolved in a mixed solution of methanol (30 ml.) and tetrahydrofuran (60 ml.). After adding 10% palladium carbon (0.4 g.) to the solution, the mixture was subjected to catalytic reduction at room temperature under atmospheric pressure. The catalyst was filtered off, and the filtrate was concentrated under reduced pressure. Water (30 ml.) was added to the residue and the mixture was adjusted to pH 7.5 with an aqueous solution of sodium bicarbonate. After removing the insoluble substance from the mixture by filtration, the filtrate was washed with ethyl acetate (50 ml.). Ethyl acetate (70 ml.) was added to the solution, and the mixture was adjusted to pH 1.5 with 10% hydrochloric acid and then shaked sufficiently. After the ethyl acetate layer was removed, the aqueous layer was extracted with ethyl acetate (30 ml.) twice. The ethyl acetate layer and the extracts were combined together, washed with a saturated aqueous solution of sodium chloride, dried over magnesium sulfate and then concentrated under reduced pressure to give 7-{2-(2-formamido-4-thiazolyl)-2-methoxyiminoacetamido}-3-chloro-3-cephem-4-carboxylic acid (syn isomer 0.48 g.), m.p. 165° to 174° C. (dec.).

Aufarbeitung

  1. customwas subjected to catalytic reduction at room temperature under atmospheric pressure
  2. filtrationThe catalyst was filtered off
  3. concentrationthe filtrate was concentrated under reduced pressure
  4. additionWater (30 ml.) was added to the residue
  5. customAfter removing the insoluble substance from the mixture
  6. filtrationby filtration
  7. washthe filtrate was washed with ethyl acetate (50 ml.)
  8. additionEthyl acetate (70 ml.) was added to the solution
  9. customAfter the ethyl acetate layer was removed
  10. extractionthe aqueous layer was extracted with ethyl acetate (30 ml.) twice
  11. washwashed with a saturated aqueous solution of sodium chloride
  12. dry with materialdried over magnesium sulfate
  13. concentrationconcentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-b5d4f274522046e2b4f20adfecd83926
Quelldatensatz
uspto-grants-1983_08
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US04399133

Notizen zur Reaktion

Wird geladen…

Auf dieser SeiteKomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion