Pure 6,6-diiodopenicillanic acid and process for its preparation
US4360463A · kind A · utility
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Key dates
| Filing date | Sep 2, 1981 |
| Grant date | Nov 23, 1982 |
| Priority date | — |
| Expiry date | Sep 2, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D499/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.