The Synthesis of Carboxy- and Cyano-substituted 4H-Imidazoles: Redoxactive Ligands as Starting Materials for Metal-Metal Multiply Bonded Compounds and Heterobimetallic Complexes
Cyanobenzoic acids proved to be suitable startingmaterials for the transformation into multifunctional products of the 4H-imidazole type. Employing two different pathways, the new derivatives 1b-d which possess carboxy/cyano groups were synthesized. In addition, derivative 1d formed the basis for the construction of novel bis-4H-imidazoles with two different complexation spheres. The structures of