Unexpected Formation of Dibenzophenazines

摘要

During spectral and photochemical studies on arylazo compounds, our attempts to prepare naphthylazo compounds by using tminodimagnesium dibromide reagents were unsuccessful, but the unexpected formation of dibenzophenazines was discovered. In order tocharacterize this unexpected product, the reactions reported by Homer and Dehnert and by Ullmann and Ankersmit were Carried out to obtain dibenzo[a,h]phenazine and dibenzo[a,j]phenazine, respectively. Surprisingly, both products were found to have the same spectral characteristics. In spite of being simple and symmetrical compounds, dibenzophenazines are not listed in common collective volumes for organic compounds.