methyl 2-diazo-3-oxo-6-(4-nitrophenyl)-4-(2-phenylethyl)hexanoate 在
tetrakis(trifluoroacetato)rhodium(II) 作用下,
以
二氯甲烷 为溶剂,
生成 methyl 5-(4-nitrophenyl)-2-oxo-3-(2-phenyl-1-ethyl)cyclopentane carboxylate 、 methyl 3-<2-(4-nitrophenyl)-1-ethyl>-2-oxo-5-phenylcyclopentane carboxylate