聚合甲醛 、
tert-butyl 3-(diethoxyphosphoryl)-5-ethyl-4-(4-methylphenyl)-2-oxopyrrolidine-1-carboxylate 在
potassium tert-butylate 作用下,
以
四氢呋喃 为溶剂,
反应 1.5h,
生成 tert-butyl 2-ethyl-4-methylidene-3-(4-methylphenyl)-5-oxopyrrolidine-1-carboxylate 、 tert-butyl 2-ethyl-4-methylidene-3-(4-methylphenyl)-5-oxopyrrolidine-1-carboxylate