Process for sterospecific synthesis of keto-enol tautomeric mixt

Details Process for sterospecific synthesis of keto-enol tautomeric mixt Process for sterospecific synthesis of keto-enol tautomeric mixt

1997-08-11

1998-10-20

Ford, John M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D50159

Patent

active

058248013

ABSTRACT:
A process for the stereospecific synthesis of keto-enol tautomeric mixture of p-nitrobenzyl (1R,6R,7R)-7-phenoxyacetamido-3-oxo-3-cepham-4-(R/S)-carboxylate-1-oxide and p-nitrobenzyl (1R,6R,7R)-7-phenoxyacetamido-3-hydroxy-3-cephem-4-carboxylate-1-oxide is described. These compounds are valuable intermediates for the synthesis of cephalosporin antibiotics e.g. cefaclor.

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