N-[2-[3',6'-bis(diethylamino)-3-oxospiro[isoindole-1,9'-xanthene]-2-yl]ethyl]-2-chloroacetamide 、
4,4'-(4,4'-(cyclopent-1-ene-1,2-diyl)bis(5-methylthiophene-4,2-diyl))diphenol 在
potassium carbonate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以74%的产率得到N-[2-[3',6'-bis(diethylamino)-3-oxospiro[isoindole-1,9'-xanthene]-2-yl]ethyl]-2-[4-[4-[2-[5-[4-[2-[2-[3',6'-bis(diethylamino)-3-oxospiro[isoindole-1,9'-xanthene]-2-yl]ethylimino]-2-hydroxyethoxy]phenyl]-2-methylthiophen-3-yl]cyclopenten-1-yl]-5-methylthiophen-2-yl]phenoxy]ethanimidic acid