Exchange and to the release of an amine from its carbamoyl fluoride
US6552228B1 · kind B1 · utility
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5Claims
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Key dates
| Filing date | Jul 5, 2000 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | Jul 5, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C209/62
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the treatment of an aryl carbamoyl fluoride comprising in its molecule at least one perhalogenated aliphatic carbon, which carbon carries at least one halogen atom to be exchanged with fluorine. This process comprises the stage of bringing the said carbamoyl fluoride into contact with hydrofluoric acid, the ratio of hydrofluoric [lacuna] to carbamoyl fluoride being maintained during the reaction at a value at least equal to 4, preferably to 5, and characterized in that the said ratio is at most equal to 11. Application to organic synthesis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.