ethyl 7-(2-bromophenyl)-5-methyl-3-oxo-2-(triphenylphosphoranylidene)-4-heptenoate 在
正丁基锂 作用下,
以
四氢呋喃 为溶剂,
反应 0.33h,
生成 ethyl 5-methylidene-3-oxo-7-phenyl-2-(triphenyl-λ5-phosphanylidene)heptanoate 、 ethyl 4-(1-methyl-2,3-dihydroinden-1-yl)-3-oxo-2-(triphenyl-λ5-phosphanylidene)butanoate