7-氯-2-氧代庚酸乙酯 、
(S)-(+)-2,2-二甲基环丙烷甲酰胺 、
(Z)-7-chloro-2-((S)-2,2-dimethylcyclopropanecarboxamido)-2-heptenoic acid ethyl ester 以10.5% of ethyl (E)-7-chloro-((S)-2,2-dimethylcyclopropanecarboxamido)-2-heptenoate (3) was obtained的产率得到ethyl (E)-7-chloro-2-((S)-2,2-dimethylcyclopropanecarboxamido)-2-heptenoate