ethyl 2-diethoxyphosphinoylacrylate 、 tert-butyl 2-(nitromethyl)-4-oxo-3-(pentan-3-yloxy)butanoate 在
caesium carbonate 作用下,
以
二氯甲烷 为溶剂,
以30%的产率得到4-(tert-butyl) 1-ethyl (3R,4R)-5-(2-(diethoxyphosphoryl)-3-ethoxy-3-oxopropyl)-5-nitro-3-(pentan-3-yloxy)cyclohex-1-ene-1,4-dicarboxylate