3,4-二甲基-1H-吡咯-2-羧醛 、 ethyl 5-[(E)-[5-[(E)-(5-cyano-4,4,5-trimethylpyrrolidin-1-id-2-ylidene)methyl]-3,4-dimethylpyrrol-2-ylidene]methyl]-3,4-dimethylpyrrol-1-ide-2-carboxylate;nickel(2+) 在
氢氧化钾 、
对甲苯磺酸 作用下,
生成
5-[1-{5-[1-{5-[1-(3,4-Dimethyl-1H-pyrrol-2-yl)-meth-(Z)-ylidene]-3,4-dimethyl-5H-pyrrol-2-yl}-meth-(Z)-ylidene]-3,4-dimethyl-5H-pyrrol-2-yl}-meth-(Z)-ylidene]-2,3,3-trimethyl-pyrrolidine-2-carbonitrile