Intermediate cefdinir salts

Details Intermediate cefdinir salts Intermediate cefdinir salts

2008-07-29

2008-07-29

Berch, Mark L (Department: 1624)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

10529649

ABSTRACT:
Disclosed are salts of the general formula (I)wherein R1, R2and B are defined in the description. These salts are useful intermediates for the preparation of cefdinir. Also, disclosed are processes for the preparation thereof from the compounds of the general formula (II) and (III).Further, disclosed is a method of producing cefdinir from the salts of the general formula (I) including the steps of removing protecting groups.

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