Process for the preparation of a 6-fluoro-2-halo-quinoline
US5624933A · kind A · utility
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8Claims
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Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Apr 29, 1997 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D471/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Method of preparation of 6-fluoro-2-halogen quinoline of general formula (I) wherein R is a hydrogen atom or an alkyl radical and Hal and Hal' are identical or different halogen atoms. The invention is characterized in that a halogenating agent is made to act on hydroxy-1 quinoline of general formula (II) wherein Hal is defined as above and R.sub.1 is defined as R excepting a hydrogen atom, the acid function being optionally released if a 6-fluoro-2-halogen quinoline is to be obtained for which R is a hydrogen atom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.