[6-(Diethylamino)-9-[2-[4-(7-hydroxy-2-oxochromene-3-carbonyl)piperazine-1-carbonyl]phenyl]xanthen-3-ylidene]-diethylazanium 、
2,4-二硝基氟苯 在
caesium carbonate 作用下,
以
二氯甲烷 为溶剂,
反应 6.0h,
以59%的产率得到[6-(Diethylamino)-9-[2-[4-[7-(2,4-dinitrophenoxy)-2-oxochromene-3-carbonyl]piperazine-1-carbonyl]phenyl]xanthen-3-ylidene]-diethylazanium