Their use as substituted heteroaryl fused imidazole compounds and herbicides

(57) [Summary] Novel substituted heterocyclic imidazoles in which R 1 , R 2 , R 3 , A 1 , A 2 , A 3 and A 4 have the meanings given in the description of the invention, and a process for preparing the same and Their use as herbicides is disclosed.