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US 4,360,463 AGranted
Pure 6,6-diiodopenicillanic acid and process for its preparation
AssigneePfizer Inc.
InventorRobert J. Sysko
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Abstract
An improved process for making 6,6-diiodopenicillanic acid, an intermediate for preparation of 6-beta-iodopenicillanic acid, a beta-lactamase inhibitor, which comprises diazotizing 6-beta-aminopenicillanic acid in the presence of iodine, followed by washing the product of said process with an aqueous solution of an alkali metal iodide.
Claims4
In the process for making 6,6-diiodopenicillanic acid by the diazotization of 6-beta-aminopenicillanic acid in the presence of iodine, the improvement which comprises washing the product of said process with an aqueous alkali metal iodide solution.
Pure 6,6-diiodopenicillanic acid.
Dependencies are inferred from the claim text.