4-Chloro-3-methyl-2-((E)-penta-2,4-dienyl)-cyclopent-2-enone 、 3-Cyclopropylmethoxy-2,2-dimethyl-cyclopropanecarboxylic acid 在
三乙胺 作用下,
生成
3-Cyclopropylmethoxy-2,2-dimethyl-cyclopropanecarboxylic acid 2-methyl-4-oxo-3-((E)-penta-2,4-dienyl)-cyclopent-2-enyl ester