Method for preparing 4-hydroquinolines and/or tautomeric compounds
US6362340B1 · kind B1 · utility
26Cited by
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22Claims
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Assignee
Inventor
Key dates
| Filing date | May 25, 2001 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | May 25, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D215/56
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention concerns a method for preparing 4-hydroquinolines and/or tautomeric compounds. More particularly, the invention concerns 5,7-dichloro-4-quinolines and/or its tautomeric compounds. The method is characterized in that it consists in heating a 4-hydroquinolinecarboxylic acid, its derivatives or precursors, at a temperature not more than 200° C. in the presence of a base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.