C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 209/10 (2006.01) C07C 211/52 (2006.01)
Patent
CA 2355358
The invention concerns a novel method for preparing polyhalogenated paratrifluoromethylanilines particularly useful as reaction intermediates for preparing compositions used as insecticides. The products of the inventive method are obtained by the action of ammonia on polyhalogenated para-trifuoromethylbenzene at a temperature ranging between 150 and 350 DEG C. The inventive reaction can be carried out in the presence of an alkaline halide.
La présente invention a pour objet un nouveau procédé de préparation de para- trifluorométhylanilines polyhalogénées particulièrement intéressantes comme intermédiaires de réaction pour la préparation de composés utilisés comme insecticides. On obtient les produits du procédé de l'invention par action d'ammoniac sur des para- trifluorométhylbenzènes polyhalogénés à une température comprise entre 150 et 350 °C. La réaction de l'invention peut être conduite en présence d'un halogénure alcalin.
Ancel Jean-Erick
Darnand Eliane
Aventis Cropscience S.a.
Merial Limited
Robic
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