Regioselective palladium catalyzed synthesis of benzimidazoles and azabenzimidazoles
申请人:Sanofi-Aventis
公开号:US08188282B2
公开(公告)日:2012-05-29
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 palladium catalyzed, regioselective process to a wide variety of unsymmetrical, multifunctional N-substituted benzimidazoles or azabenzimidazoles of formula I starting from 2-halo-nitroarenes and N-substituted amides useful for the production of pharmaceuticals, diagnostic agents, liquid crystals, polymers, herbicides, fungicidals, nematicidals, parasiticides, insecticides, acaricides and arthropodicides.
本发明涉及一种合成式I化合物的区域选择性合成过程,其中R0; R1; R2; R3; R4; R5; A1; A2; A3; A4,Q和J具有所述权利要求中指示的含义。本发明提供了一种直接钯催化的、区域选择性的过程,可以从2-卤代硝基芳烃和N-取代酰胺开始,合成多种非对称、多功能的N-取代苯并咪唑或氮杂苯并咪唑式I化合物,这些化合物可用于制药、诊断试剂、液晶、聚合物、除草剂、杀菌剂、线虫杀剂、驱虫剂、杀虫剂、杀螨剂和杀节肢动物剂的生产。