A transition metal catalyzed synthesis of 2h-indazoles

Details A transition metal catalyzed synthesis of 2h-indazoles A transition metal catalyzed synthesis of 2h-indazoles

C - Chemistry, Metallurgy

07

D

C07D 231/56 (2006.01)

Patent

CA 2693024

The present invention relates to a process for the regioselective 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 transition metal catalyzed process to a wide variety of multifunctional 2H-indazoles or 2H-azaindazoles of the formula (I) from 2-halo-phenylacetylenes or (2-sulfonato)phenylacetylenes and monosubstituted hydrazines, useful for the production of pharmaceuticals, diagnostic agents, liquid crystals, polymers, herbicides, fungicidals, nematicidals, parasiticides, insecticides,

La présente invention concerne un procédé pour la synthèse régiosélective de composés de formule (I), dans laquelle R0 ; R1 ; R2 ; R3 ; R4 ; R5 ; A1 ; A2 ; A3 ; A4 ; Q et J ont les significations indiquées dans les revendications. La présente invention concerne un procédé direct catalysé par un métal de transition pour obtenir des 2H-indazoles ou des 2H-aza-indazoles multifonctionnels de formule (I) très divers à partir de 2-halogéno-phénylacétylènes ou de (2-sulfonato)phénylacétylènes et d'hydrazines monosubstituées, utiles pour la production de produits pharmaceutiques, d'agents de diagnostic, de cristaux liquides, de polymères, d'herbicides, de fongicides, de nématicides, de parasiticides, d'insecticides, d'acaricides et d'arthropodicides.

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