6'-chloro-N-[4-[1-[4-[(6'-chloro-1,1-dioxospiro[2,1lambda6-benzoxathiole-3,9'-xanthene]-3'-yl)amino]-3,5-dimethylphenyl]cyclohexyl]-2,6-dimethylphenyl]-1,1-dioxospiro[2,1lambda6-benzoxathiole-3,9'-xanthene]-3'-amine 、
2,4,6-三甲基苯胺 在
zinc(II) chloride 作用下,
以
环丁砜 为溶剂,
反应 3.0h,
以16.2 g的产率得到2-[3-[4-[1-[3,5-Dimethyl-4-[[9-(2-sulfonatophenyl)-6-(2,4,6-trimethylphenyl)azaniumylidenexanthen-3-yl]amino]phenyl]cyclohexyl]-2,6-dimethylanilino]-6-(2,4,6-trimethylphenyl)azaniumylidenexanthen-9-yl]benzenesulfonate