(Z)-6-(1-Ethoxy-ethoxy)-1-iodo-hex-1-ene 、 (3R,4R)-4-(tert-Butyl-dimethyl-silanyloxy)-3-[(Z)-(S)-3-(tert-butyl-dimethyl-silanyloxy)-oct-5-en-1-ynyl]-2-methylene-cyclopentanone 在
叔丁基锂 、 lithium,azanidylidenemethylidenecopper,2H-thiophen-2-ide 作用下,
生成
(2R,3S,4R)-4-(tert-Butyl-dimethyl-silanyloxy)-3-[(Z)-(S)-3-(tert-butyl-dimethyl-silanyloxy)-oct-5-en-1-ynyl]-2-[(Z)-7-(1-ethoxy-ethoxy)-hept-2-enyl]-cyclopentanone