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Synthesis of benz[c]acridine chromophores. a) POCl3, 80 °C, b) (1) N-methylethylenediamine, dioxane, reflux, (2) 2m NH4OH; c) NaOH, phenol, 120 °C; d) (1) N-methylethylenediamine, dioxane, reflux, (2) 2m NH4OH; e) (1) tert-butyl(2-aminoethyl)methylcarbamate, triethylamine, dioxane, reflux, (2) HCl/AcOH, (3) 2m NaOH.
