Process for the selective preparation of meta-chloroanilines
US4418213A · kind A · utility
5Cited by
1References
20Claims
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Key dates
| Filing date | Jul 14, 1981 |
| Grant date | Nov 29, 1983 |
| Priority date | — |
| Expiry date | Jul 14, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C209/36
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for the selective preparation of meta-chloroanilines. It is carried out by the hydrodechlorination of polychloroanilines or polychloronitrobenzenes with hydrogen, in the liquid phase, under the action of heat, at atmospheric pressure or under pressure, in the presence of a noble metal, in an anhydrous organic medium and in the presence of a Lewis acid. These meta-chloroanilines are intermediates especially for active plant-protection substances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.