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Kinetically controlled triaryl phosphite halogen compounds of the formula wherein X is Cl or Br, and Z is hydrogen, halo, C1-C4 alkyl or C1-C4 alkoxy, are used to effect a) halogenation of a C-6 or C-7 accylamine penicillin or cephalosporin, b) halogenation of a 3-hydroxy-3-cephem, c) one step halog...

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Hauptverfasser:	J.W. FISHER, L.D. HATFIELD, L.C. BLASZCZAK, C.A. BUNNELL
Format:	Patent
Sprache:	fre
Schlagworte:	APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY HETEROCYCLIC COMPOUNDS HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	Kinetically controlled triaryl phosphite halogen compounds of the formula wherein X is Cl or Br, and Z is hydrogen, halo, C1-C4 alkyl or C1-C4 alkoxy, are used to effect a) halogenation of a C-6 or C-7 accylamine penicillin or cephalosporin, b) halogenation of a 3-hydroxy-3-cephem, c) one step halogenation of a C-7 acylamine-3-hydroxy-cephem d) reduction of a cephalosporin sulfoxide e) one step reduction/halogenation of a 3-hydroxy cephalosporin sulfoxide f) one step reduction/halogenation of a C-7 acylamine cephalosporin sulfoxide g) one step reduction/halogenation of a C-7 acylamino-3-hydroxy cephalosporin sulfoxide.