(2R,4S)-5-(tert-Butyl-dimethyl-silanyloxy)-2,4-dimethyl-hexanal 、
(S)-5-(tert-Butyl-diphenyl-silanyloxymethyl)-3-trimethylsilanyl-dihydro-furan-2-one 在
lithium hexamethyldisilazane 作用下,
生成 (S)-3-[(2R,4S)-5-(tert-Butyl-dimethyl-silanyloxy)-2,4-dimethyl-hex-(Z)-ylidene]-5-(tert-butyl-diphenyl-silanyloxymethyl)-dihydro-furan-2-one 、 (S)-3-[(2R,4S)-5-(tert-Butyl-dimethyl-silanyloxy)-2,4-dimethyl-hex-(Z)-ylidene]-5-(tert-butyl-diphenyl-silanyloxymethyl)-dihydro-furan-2-one