Process for the preparation of...

C - Chemistry – Metallurgy – 07 – D

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C07D 403/14 (2006.01) C07D 403/12 (2006.01)

Patent

CA 2122885

BREVET D'INVENTION "Procédé de Préparation de 2-{4-[4-(4-chloro-1-pyrazolyl)butyl]1- pipérazinyl}pyrimidine (Lesopitron)". LABORATORIOS DEL DR ESTEVE S.A. ABREGE DESCRIPTIF La présente invention concerne un procédé de préparation de 2-{4- [4-(4-chloro-1-pyrazolyl)butyl]1-pipérazinyl}pyrimidine (Lesopitron) de formule I: Image I caractérisé en ce qu'on effectue en une seule étape dans un solvant approprié la réaction entre la 2-(1-pipérazinyl)pyrimidine, le 4-chloropyrazole et la chaîne carbonée de formule (III) Image (III) dans laquelle X et Y, identiques ou différents, représentent un groupe partant approprié.

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