A regioselective copper catalyzed synthesis of...

C - Chemistry – Metallurgy – 07 – D

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C07D 235/08 (2006.01) C07D 235/16 (2006.01) C07D 235/18 (2006.01) C07D 401/04 (2006.01) C07D 471/04 (2006.01)

Patent

CA 2691857

The present invention relates to a process for the re-gioselective synthesis of compounds of the formula (I), wherein R0; R1; R2; R3; R4; R5; A1; A2; A3; A4; Q and J have the meanings indicated in the claims. The present invention provides a direct cop-per catalyzed regioselective process to a wide variety of unsymmetrical, multifunctional N/-substituted benzimidazoles or azabenzimida-zoles of formula I starting from 2-halo-nitroarenes and N/- substituted amides. The process is useful for the production of pharmaceuticals, diagnostic agents, liquid crystals, polymers, herbicides, fungicidals, nematicidals, parasiticides, insecticides, acaricides and arthropodicides.

L'invention porte sur un procédé de synthèse régiosélective de composés de la formule I, dans laquelle R0; R1; R2; R3; R4; R5; A1; A2; A3; A4; Q et J sont tels que spécifiés dans les revendications. L'invention se rapporte à un procédé régiosélectif direct catalysé par le cuivre, qui permet de préparer une large variété de benzimidazoles ou azabenzimidazoles multifonctionnels asymétriques NI-substitués de la formule I à partir de 2-halo-nitroarènes et d'amides NI-substitués. Le procédé de l'invention est utilisé dans la production de produits pharmaceutiques, d'agents diagnostiques, de cristaux liquides, de polymères, d'herbicides, de fongicides, de nématicides, de parasiticides, d'insecticides, d'acaricides et d'arthropodicides.

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