1-(3,5-di-t-butyl phenyl)-cyclopropaneacetaldehyde 、 3-Ethoxycarbonyl-2-methylprop-2-enylphosphonate 以to give 712 mg of ethyl-6-[1-(3,4-diethylbenzene)-cyclopropyl]-3-methyl-2,4-hexadienoate (11) as a pale yellow oil in 91% yield的产率得到ethyl-6-[1-(3,5-di-t-butyl phenyl)-cyclopropyl]-3-methyl-2,4-hexadienoate