4-benzooxazol-2-ylmethylene-2-(2,4-dinitro-phenyl)-5-methyl-2,4-dihydro-pyrazol-3-one 、
1-乙基-4-甲基喹啉碘 在
哌啶 作用下,
以
乙醇 为溶剂,
生成 4-[4-benzooxazol-2-ylmethylene-2-(2,4-dinitro-phenyl)-5-methyl-2,4-dihydro-pyrazol-3-ylidenemethyl]-1-ethyl-quinolinium; iodide