Process for preparing 3-hydroxy cephalosporins
US4008230A · kind A · utility
8Cited by
1References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1975 |
| Grant date | Feb 15, 1977 |
| Priority date | — |
| Expiry date | Oct 29, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D205/095
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
3-Hydroxycephalosporins are prepared by treating a 3-hydroxy-4-bromo-2-(2-formylthio-4-oxo-3-amido or imido-1-azetidinyl)-2-butenoate ester with mercuric acetate and contacting the resulting reaction mixture with a mercuric ion precipitator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.