4-氟-N-甲基苯胺 、 8-(1-bromoethyl)-N-(2-(dimethylamino)ethyl)-N-methyl-2-morpholino-4-oxo-4H-chromene-6-carboxamide hydrobromide 以to give N-(2-(dimethylamino)ethyl)-8-(1-((4-fluorophenyl)(methyl)amino)ethyl)-N-methyl-2-morpholino-4-oxo-4H-chromene-6-carboxamide (39.0 mg, 46.4%) as a white solid的产率得到N-(2-(dimethylamino)ethyl)-8-(1-((4-fluorophenyl)(methyl)amino)ethyl)-N-methyl-2-morpholino-4-oxo-4H-chromene-6-carboxamide