Preparation of 2,4,5-trifluorobenzoic acid by decarboxylation of 3,4,6-trifluorophthalic acid
US5233085A · kind A · utility
2Cited by
1References
4Claims
0Family size
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Key dates
| Filing date | Jun 12, 1992 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | Jun 12, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/38
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
3,4,6-Trifluorophthalic acid may be decarboxylated in a controlled manner to form 2,4,5-trifluorobenzoic acid by heating the phthalic acid in a dipolar aprotic solvent in the absence of any catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.