Process for the preparation of cephalosporin intermediate and its use for the manufacture of cephalosporin compounds

The present invention relates to a process for the preparation of 4-halogeno-2-substitutedimino-3-oxo-butyric acid of formula (I) wherein R1 represents CH3, CRRCOOR where R and R independently represent hydrogen or methyl and R represents hydrogen or (C1-C6)alkyl, X represents halogen such as chlori...

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Bibliographische Detailangaben
Hauptverfasser:	SUNDARAVADIVELAN SIVAKUMARAN, DESHPANDE PANDURANG BALWANT, LUTHRA PARVEN KUMAR, SATHE PRATIK RAMESH, GANESH PRAVEEN NAGESH
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM CHEMISTRY HETEROCYCLIC COMPOUNDS HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE METALLURGY ORGANIC CHEMISTRY PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS
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Beschreibung
Zusammenfassung:	The present invention relates to a process for the preparation of 4-halogeno-2-substitutedimino-3-oxo-butyric acid of formula (I) wherein R1 represents CH3, CRRCOOR where R and R independently represent hydrogen or methyl and R represents hydrogen or (C1-C6)alkyl, X represents halogen such as chlorine or bromine, also discloses the activation of this acid and its further use in the preparation of cephalosporanic antibiotics (II) in excellent yields and purity