Process for the synthesis of penems
US4782146A · kind A · utility
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11Claims
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Key dates
| Filing date | Jun 16, 1987 |
| Grant date | Nov 1, 1988 |
| Priority date | — |
| Expiry date | Jun 16, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the synthesis of penems from azetidinones via 1-aza-4,5-dithiabicyclo[4.2.0]oct-2-en-8-one-2-carboxylate esters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.