Process for the preparation of substituted pyrazole...

Details Process for the preparation of substituted pyrazole... Process for the preparation of substituted pyrazole...

C - Chemistry, Metallurgy

07

D

C07D 231/44 (2006.01)

Patent

CA 2407839

A process for the preparation of a compound of general formula (I), wherein R1 is CN or CSNH2; R2 is hydrogen or chloride; and R3 is halogen or haloalkyl or haloalkoxy or SF5 which process comprises reacting a compound of formula (II), where R1, R2 and R3 are as defined above; with a proton source.

La présente invention concerne un procédé de préparation d'un composé de formule générale (I), dans laquelle: R<1> est CN ou CSNH2; R<2> est hydrogène ou chlorure; et R<3> est halogène ou haloalkyle ou haloalcoxy ou SF5, lequel procédé consiste à faire réagir un composé de formule (II) où R<1>, R<2> sont tels que définis plus haut, avec une source de protons.

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