Bronsted Acid Mediated Synthesis and Properties of Dibenzoacridine Derivatives

An efficient and convenient method for the synthesis of dibenzo[c,h]acridine derivatives via electrophilic cycloisomerisation mediated by methanesulfonic acid has been developed. This method provides the desired acridines in moderate to very good yields introducing various substituents in positions 2 and 6 as well as on the dibenzo[c,h]acridine scaffold. Photophysical and electrochemical properties have been investigated for selected products by UV/Vis and CV measurements which have been verified by DFT calculations.