Reaction of aroylenebenzimidazoles with nucleophilic reagents
The reaction of aromatic mono- and bis(o-phenylenediamines), -(aminophenols), and -(o-aminothiophenols) with mono- and diaroylenebenzimidazoles in polyphosphoric acid was studied. The interrelationship between the structures and properties of the resulting compounds, which contain benzimidazole and other rings in the ortho position relative to one another, was investigated.