A regioselective palladium catalyzed synthesis of benzimidazoles and azabenzimidazoles
申请人:sanofi-aventis
公开号:EP1878724A1
公开(公告)日:2008-01-16
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, acaricitdes and arthropodicides.
本发明涉及一种用于合成式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的含义如权利要求中所示。本发明提供了一种直接钯催化的、区域选择性的过程,可从2-卤代硝基芳烃和N-取代酰胺出发,合成多种非对称的、多功能的N-取代苯并咪唑或氮代苯并咪唑的式I化合物,用于生产药物、诊断试剂、液晶、聚合物、除草剂、杀菌剂、线虫杀灭剂、杀虫剂、螨虫剂和节肢动物杀虫剂。