5,6-dihydro-4H-cyclopenta[b]thiophen-6-yl triphenylphosphonium bromide 、
(E)-2,2'-diformyl-6,6'-bis(4,5-dihydro-6H-3-n-octyl-cyclopenta[b]thienylidene) 在
potassium tert-butylate 作用下,
以
四氢呋喃 、
乙腈 为溶剂,
以14%的产率得到(6E)-2-[(E)-4,5-dihydrocyclopenta[b]thiophen-6-ylidenemethyl]-6-[2-[(E)-4,5-dihydrocyclopenta[b]thiophen-6-ylidenemethyl]-3-octyl-4,5-dihydrocyclopenta[b]thiophen-6-ylidene]-3-octyl-4,5-dihydrocyclopenta[b]thiophene