methyl 4-(2-dimethylamino-4-methoxyphenyloxy)butanoate 、
3,6-bis(dimethylamino)-9H-xanthen-9-one 在
草酰氯 作用下,
以
氯仿 为溶剂,
反应 72.5h,
以33%的产率得到N-(6-(dimethylamino)-9-(4-(dimethylamino)-2-methoxy-5-(4-methoxy-4-oxobutoxy)phenyl)-3H-xanthen-3-ylidene)-N-methylmethanaminium chloride