New approach to synthesis of N-substituted 9-amino/iminoacridines with important fluorescence properties

In order to obtain new fluorogens simple versatile methods of synthesis of some O-alkyl [(10-methylacridinium-9-yl)amino]methanethioate trifluorometha nesulfonates, O-alkyl [(10-methyl-10H-acridin-9-ylidene)amino]methanethioat es and O-alkyl [(10-methyl-10H-acridin-9-ylidene)amino]carboxylates were el aborated. The fluorescence properties of compounds under study were discuss ed.