Aventis Cropscience S.a.

Rhone-poulenc Agro

Basf Agro B.v., Arnhem (nl), Wadenswil-branch

Basf Agro B.v., Amhem (nl) - Wadenswil Branch

Jean-Erick Ancel

Themistocles D D'Silva

Manuel Vangelisti

Gilles Perrin-Janet

Pierre Versproumy

Themistocles D J D'Silva

Eliane Darnand

A process for preparing pesticides or pesticidal intermediates, particularly 5-amino-1 aryl-3-cyanopyrazoles, having the formula said process comprising reacting a compound having the formula with a cyanide salt.

Process for preparing pesticidal intermediates

A process for preparing pesticides or pesticidal intermediates, particularly 5-amino-1 aryl-3-cyanopyrazoles, having the formulasaid process comprising reacting a compound having the formulawith a cyanide salt.

The invention concerns a novel method for preparing polyhalogenated paratrifluormethylanilines 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-trifluoromethylbenzene at a temperature ranging between 150 and 350&deg; C. The inventive reaction can be carried out in the presence of an alkaline halide.

Method for preparing polyhalogenated paratrifluoromethylanilines

Processes for preparing pesticidal intermediates

The invention relates to a process for the preparation of compounds having the formula (I)

The invention relates to a process for the preparation of compounds having the formula (I) ##STR1## wherein W, R.sub.2, R.sub.3, R.sub.5 and R.sub.6 are as defined in the description, which are useful as intermediates in the synthesis of pesticidally active compounds.

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Saint Genis Laval, France

Jean-Erick Ancel