Process for quinoline-3-carboxylic acid antibacterial agents
US4578473A · kind A · utility
15Cited by
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21Claims
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Key dates
| Filing date | Apr 15, 1985 |
| Grant date | Mar 25, 1986 |
| Priority date | — |
| Expiry date | Apr 15, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D487/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An improved process for the preparation of 7-substituted amino-1-cyclopropyl-6,8-difluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acids is described where an alkyl ester of a 6,7,8-trifluoro precursor is converted to a trialkylsilyl ester which fluorine at C.sub.7 is directly displaced to the desired product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.