(E)-ethyl 3-(8-chloro-2,3-dihydrobenzo[b][1,4]dioxin-6-yl)acrylate 、
1-(2-fluorobenzyl)tetrahydrothiophenium bromide 在
silica 、
乙酸乙酯 作用下,
以gave the title compound as a colourless oil (472 mg, 39%, 3:1 trans:cis)的产率得到(1S*,2R*,3R*)-Ethyl-2-(8-chloro-2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-3-(2-fluorophenyl)-cyclopropanecarboxylate