Method for preparing 4-(3-pyridinyl)-1h-imidazole and the...

C - Chemistry – Metallurgy – 07 – D

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C07D 401/04 (2006.01) C07D 213/51 (2006.01)

Patent

CA 2337270

The invention concerns a method for preparing compounds of formula (I) wherein R represents a hydrogen atom or an alkyl radical containing up to 8 carbon atoms, characterised in that it consists in subjecting a compound of formula (II) wherein alc represents the residue of an alkyl radical containing up to 4 carbon atoms to the action of a compound of formula (III): RCONH2, wherein R retains its previous meaning, to obtain the compound of formula (IV) wherein R retains its previous meaning which is subjected to cyclization to obtain the desired product of formula (I).

L'invention a pour objet un procédé de préparation de composés de formule (I) dans laquelle R représente un atome d'hydrogène ou un radical alkyle renfermant jusqu'à 8 atomes de carbone caractérisé en ce que l'on soumet un composé de formule (II); dans laquelle alc représente le reste d'un radical alkyle renfermant jusqu'à 4 atomes de carbone à l'action d'un composé de la formule (III): RCONH2; dans laquelle R conserve sa signification précédente, pour obtenir le composé de formule (IV); dans laquelle R conserve sa signification précédente que l'on soumet à une cyclisation pour obtenir le produit de formule (I) recherché.

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