Regioselective palladium catalyzed synthesis of benzimidazoles and azabenzimidazoles
申请人:ALONSO Jorge
公开号:US20090203912A1
公开(公告)日:2009-08-13
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方法,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,从2-卤代硝基芳烃和N-取代酰胺出发,合成了广泛的非对称、多功能的N-取代苯并咪唑或氮杂苯并咪唑式I化合物,用于制药、诊断试剂、液晶、聚合物、除草剂、杀菌剂、线虫杀灭剂、寄生虫杀灭剂、杀虫剂、螨虫杀灭剂和节肢动物杀灭剂的生产。