Preparation of 4-acyloxyazetidinones from acyl nitrates and penams
US4554103A · kind A · utility
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2Claims
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Key dates
| Filing date | Jul 14, 1983 |
| Grant date | Nov 19, 1985 |
| Priority date | — |
| Expiry date | Jul 14, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D499/88
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There is disclosed a high yielding process for cleaving penicillinates with acyl or aroyl nitrates to produce acyloxy or aroyloxy azetidinones which are intermediates in the multistep process for producing penems from penicillinates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.