费舍尔氏醛 、
2,4,2',4'-tetramethyl-3,3'-pentane-1,5-diyl-bis-thiazolium; dibromide 在
sodium perchlorate 作用下,
反应 0.08h,
生成 4,4'-dimethyl-2,2'-bis-[3-(1,3,3-trimethyl-1,3-dihydro-indol-2-ylidene)-propenyl]-3,3'-pentane-1,5-diyl-bis-thiazolium; diperchlorate