4-ethyl-5-chloromethyl-3-methyl-pyrrole-2-carboxylic acid ethyl ester 、
sodium cyclopentadienide 以
四氢呋喃 为溶剂,
反应 4.0h,
生成 5-Cyclopenta-1,4-dienylmethyl-4-ethyl-3-methyl-1H-pyrrole-2-carboxylic acid ethyl ester 、 5-Cyclopenta-1,3-dienylmethyl-4-ethyl-3-methyl-1H-pyrrole-2-carboxylic acid ethyl ester