乙醇 、
[10-(2-Carboxyphenyl)-17-methyl-12-oxo-3,13-dioxa-17-azapentacyclo[12.8.0.02,11.04,9.016,21]docosa-1(14),2(11),4,7,9,15,21-heptaen-6-ylidene]-diethylazanium;perchlorate 在
硫酸 作用下,
反应 2.0h,
以66%的产率得到[10-(2-Ethoxycarbonylphenyl)-17-methyl-12-oxo-3,13-dioxa-17-azapentacyclo[12.8.0.02,11.04,9.016,21]docosa-1(14),2(11),4,7,9,15,21-heptaen-6-ylidene]-diethylazanium;perchlorate