Process for purifying mesotrione

Details Process for purifying mesotrione Process for purifying mesotrione

C - Chemistry, Metallurgy

07

C

C07C 315/06 (2006.01) C07C 317/24 (2006.01)

Patent

CA 2558077

A method for reducing the cyanide levels in a mesotrione sample, said method comprising: (i) taking an aqueous solution of the mesotrione sample in an aqueous solvent, (ii) adjusting the pH of said aqueous solution to a value of 9.5 or higher, and (iii) crystallising the mesotrione out of solution is disclosed.

L'invention concerne un procédé de réduction des niveaux de cyanure dans un échantillon de mésotrione, ledit procédé consistant : (i) à placer une solution aqueuse de l'échantillon de mésotrione dans un solvant aqueux, (ii) à ajuster le pH de ladite solution aqueuse à une valeur supérieure ou égale à 9,5, et (iii) à cristalliser la mésotrione hors de la solution.

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