2,2-diethyl-6-ethynyl-8-isopropyl-4,4-dimethyl chroman 、 2-{4-[(8-cyclopropyl-3,4-dihydro-4,4-dimethylspiro[2H-1-benzopyran-2,1'-cyclopropane]-6-yl)ethynyl]-phenyl}-2-methyl-propionic acid methyl ester 、
三乙胺 、
乙酸乙酯 在
碘化亚铜 、
双三苯基磷二氯化钯 作用下,
以
正己烷 为溶剂,
以the title compound was obtained as a yellow oil (0.070 g, 62%)的产率得到2-[4-(2,2-diethyl-8-isopropyl-4,4-dimethyl-chroman-6-ylethynyl)-phenyl]-2-methyl-propionic acid methyl ester