2,4,6-trimethylphenyl α-fluoro-α-trimethylsilylacetate 、
TBDMS-protected (2-hydroxymethyl)cyclopentanone 在
lithium diisopropyl amide 作用下,
以63%的产率得到[2-(tert-Butyl-dimethyl-silanyloxymethyl)-cyclopent-(E)-ylidene]-fluoro-acetic acid 2,4,6-trimethyl-phenyl ester