2-(ethyloxycarbonyl)-3-ethyl-4-methylpyrrole 、
2-[[5-(chloromethyl)-3,4-diethyl-1H-pyrrol-2-yl]methylidene]propanedinitrile 以
溶剂黄146 为溶剂,
以86%的产率得到5-[5-(2,2-Dicyano-vinyl)-3,4-diethyl-1H-pyrrol-2-ylmethyl]-3-ethyl-4-methyl-1H-pyrrole-2-carboxylic acid ethyl ester