(1S,2R,5S)-3,3-Dimethyl-2-(2-trimethylsilanyl-ethoxymethoxy)-bicyclo[3.2.0]heptan-6-one 在
正丁基锂 、 tetrakis(acetonitrile)copper(I)tetrafluoroborate 作用下,
生成
(3aR,4S,6aR)-5,5-Dimethyl-1,1-bis-methylsulfanyl-4-(2-trimethylsilanyl-ethoxymethoxy)-hexahydro-pentalen-2-one