[4-(ethoxycarbonyl)-2-fluorobenzyl](triphenyl)phosphonium bromide 、
tert-butyl 4-(6-formyl-pyridin-3-yl)-piperazine-1-carboxylate 以to give tert-butyl 4-(6-{2-[4-(ethoxycarbonyl)-2-fluorophenyl]vinyl}pyridin-3-yl)piperazine-1-carboxylate (1.802 g, yield 98.9%, E/Z mixture) as a pale-brown solid的产率得到tert-butyl 4-(6-{2-[4-(ethoxycarbonyl)-2-fluorophenyl]vinyl}pyridin-3-yl)piperazine-1-carboxylate