2,8-dimethyl-5-bromoindolo<3,2-d>thiazole ethiodide 、
5-bromo-8-methyl-2-β-acetanilidovinylindolo<3,2-d>thiazole ethiodide 以
乙酸酐 为溶剂,
反应 0.17h,
以27%的产率得到7-Bromo-2-{(E)-3-[7-bromo-1-ethyl-4-methyl-1,4-dihydro-thiazolo[5,4-b]indol-(2Z)-ylidene]-propenyl}-1-ethyl-4-methyl-4H-thiazolo[5,4-b]indol-1-ium; iodide