Process for making substituted pyrazoles

C - Chemistry – Metallurgy – 07 – D

Patent

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C07D 401/14 (2006.01) A61K 31/506 (2006.01) A61P 29/00 (2006.01) C07D 401/04 (2006.01)

Patent

CA 2461095

This invention is directed to a process for making substituted pyrazoles, (I) tautomers of the substituted pyrazoles, and salts of the substituted pyrazoles and tautomers, wherein R3A, R3B, R3C, Y1, Y2, Y3, Y4, and Y5 are as defined in the specification. The process comprises: forming a mixture by a process comprising introducing a hydrazone (II) and an optionally-substituted benzoyl halide (III) into a reactor, and heating the mixture to a temparature of greater than 50 ~C (II); and (III).

L'invention concerne un procédé permettant de préparer des pyrazoles substitués représentés par la formule (I), des tautomères desdits pyrazoles substitués et des sels desdits pyrazoles substitués et tautomères. Dans cette formule, R?3A¿, R?3B¿, R?3C¿, Y?1¿, Y?2¿, Y?3¿, Y?4¿ et Y?5¿ sont tels que définis dans la spécification. Ledit procédé consiste à former un mélange par introduction d'un hydrazone représenté par la formule (II) et d'un halogénure de benzoyle éventuellement substitué représenté par la formule (III) dans un réacteur, et à chauffer ledit mélange à une température supérieure à 50 ·C.

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