Process for selective hydrodefluorination
US5294738A · kind A · utility
1Cited by
5References
22Claims
0Family size
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Key dates
| Filing date | Apr 3, 1992 |
| Grant date | Mar 15, 1994 |
| Priority date | — |
| Expiry date | Apr 3, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the selective hydrodefluorination of a tetrafluorophthalimide compound of the formula ##STR1## where X is 1 and R is a monovalent organo group; or X is 2 and R is a divalent organo group; comprises reacting (I) the tetrafluorophthalimide with zinc in an aqueous alkali metal hydroxide medium. The product may be hydrolyzed to form 3,4,6-trifluorophthalic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.