New process for the preparation of...

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C - Chemistry, Metallurgy

07

D

C07D 209/96 (2006.01)

Patent

CA 2378087

The invention relates to a process for the preparation of a compound of formula (I) and the salts thereof by reacting the compound of formula (II) with the compound of formula (III), which comprises carrying out the reaction in dimethyl sulfoxide, at a temperature between 10 °C and 40 °C, preferably at room temperature and transforming the resulting base of formula (I), if desired, into its salt by a method known per se.

La présente invention concerne une technique de préparation d'un composé représenté par la formule (I) et de ses sels. Cette technique consiste à faire réagir le composé de formule (II) avec le composé de formule (III), ce qui implique de mettre en oeuvre cette réaction dans du sulfoxyde diméthylique, à une température située entre 10 DEG C et 40 DEG C, de préférence à température ambiante, et de transformer la base de formule (I) qui en résulte, le cas échéant, en ses sels par une technique connue en soi.

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