Process for the preparation of mesylates of piperazine...

Details Process for the preparation of mesylates of piperazine... Process for the preparation of mesylates of piperazine...

C - Chemistry, Metallurgy

07

D

C07D 263/58 (2006.01)

Patent

CA 2422703

The invention relates to the mesylates of a group of piperazine derivatives and to a process for the preparation of these mesylates in an economic way in the high yield and of high purity. According to the process of the invention the synthesis of the piperazine ring and the mesylate formation are combined in a single reaction step. The invention relates to the mesylate of compounds of the formula (I) wherein X is a bicyclic heterocyclic phenyl group and Y is methyl, ethyl (optionally substituted with fluorine), cycloalkyl (3-7C) methyl, benzyl or m-phenyl benzyl.

Mésylates d'un groupe de dérivés de pipérazine et procédé de préparation de ces mésylates de manière économique avec un rendement élevé, lesdits mésylates présentant une grande pureté. Selon ledit procédé, la synthèse du noyau de pipérazine et la formation de mésylate sont combinées dans une seule étape de réaction. La présente invention concerne le mésylate de composés de formule (I) dans laquelle X représente un groupe phényle hétérocyclique bicyclique et Y représente méthyle, éthyle (éventuellement substitué avec fluor), cycloalkyle (3-7C) méthyle, benzyle ou m-phénylbenzyle.

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