2-[2,6-Bis-(3,5-di-tert-butyl-4-hydroxy-phenyl)-cyclopenta[2,1-b;3,4-b']dithiophen-4-ylidene]-malononitrile 在
lead dioxide 作用下,
以
二氯甲烷 为溶剂,
反应 0.5h,
以98%的产率得到2-[2,6-Bis-(3,5-di-tert-butyl-4-oxo-cyclohexa-2,5-dienylidene)-2,6-dihydro-cyclopenta[2,1-b;3,4-b']dithiophen-4-ylidene]-malononitrile