Processes for the preparation of...

C - Chemistry – Metallurgy – 07 – D

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C07D 239/48 (2006.01) C07C 253/20 (2006.01) C07C 253/30 (2006.01)

Patent

CA 2493794

Processes for the preparation of 4-[[4-[[4-(2-cyanoethenyl)-2,6- dimethylphenyl]amino]-2-pyrimidinyl]amino]benzonitrile of formula (I), a N- oxide, a pharmaceutically acceptable acid addition salt, a quaternary amine or a stereochemically isomeric form thereof are provided, said processes comprise a) reacting 4-(2-cyanoethenyl)-2,6-dimethylbenzenamine with an intermediate of formula (III) in the presence of a suitable solvent; b) reacting an intermediate of formula (IV) with acrylonitrile in the presence of a suitable palladium catalyst, a suitable base and a suitable solvent; c) dehydrating the corresponding amide of the compound of formula (I).

L'invention concerne des procédés de préparation de 4-[[4-[[4-(2-cyanoéthényl)-2,6-diméthylphényl]amino]-2-pyrimidinyl]amino]benzonitrile de formule (I), d'un oxyde N, d'un sel d'addition acide pharmaceutiquement acceptable, d'une amine quaternaire ou d'une forme isomère stéréochimique de ce benzonitrile. Ces procédés consistent : a) à faire réagir 4-(2-cyanoéthényl)-2,6-diméthylbenzènamine avec un intermédiaire de formule (III) en présence d'un solvant approprié; b) à faire réagir un intermédiaire de formule (IV) avec acrylonitrile en présence d'un catalyseur au palladium approprié, d'une base appropriée et d'un solvant approprié; c) à déshydrater l'amide correspondant du composé de formule (I).

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