(5-Bromo-4,4-dimethyl-hex-5-enyloxy)-tert-butyl-diphenyl-silane 在
copper(I) bromide dimethylsulfide complex 、
三氟化硼乙醚 、
叔丁基锂 、 magnesium bromide 作用下,
生成 (1R,2S)-2-[5-(tert-Butyl-diphenyl-silanyloxy)-2,2-dimethyl-1-methylene-pentyl]-5-oxo-cyclopentanecarboxylic acid ethyl ester