Process for the preparation of 2,6-dihalo-para-trifluoromethylaniline
US7553993B2 · kind B2 · utility
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Key dates
| Filing date | Oct 24, 2003 |
| Grant date | Jun 30, 2009 |
| Priority date | — |
| Expiry date | Feb 24, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C209/74
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for the preparation of a compound of general formula (I):in which X represents a halogen atom,by reaction of para-trifluoromethylaniline of formula (II):with a dihalogen X2,the two compounds being introduced simultaneously into a polar aprotic solvent in a dihalogen/compound (II) molar ratio ranging from 1.9 to 2.5 and at a temperature ranging from 100 to 300° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.