2-phenylamino-3-ethoxycarbonyl-4-phenylthiophene 、
3-chloro-5-phenyl-1,2-dithiol-1-ium chloride 在
高氯酸 作用下,
生成 4-Phenyl-5-[5-phenyl-[1,2]dithiol-(3E)-ylidene]-2-[(E)-phenylimino]-2,5-dihydro-thiophene-3-carboxylic acid ethyl ester; compound with perchloric acid