7-((E)-2-(5-(2-ethylhexyl)-2,3-dihydrothieno[3,4-b][1,4]dioxin-7-yl)vinyl)-2,3-dihydrothieno[3,4-b][1,4]dioxine-5-carbaldehyde 、
2,5-bis((2-ethylhexyl)oxy)-p-xylylene-bis(diethylphosphonate) 在
potassium tert-butylate 作用下,
以
四氢呋喃 为溶剂,
反应 0.5h,
以89%的产率得到6-((1E)-2-(5-((1E)-2-(2,5-bis(2-ethylhexyloxy)-4-((1E)-2-(5-((E)-2-(3,3-dibutyl-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepin-6-yl)vinyl)-2,3-dihydrothieno[3,4-b][1,4]dioxin-7-yl)vinyl)phenyl)vinyl)-2,3-dihydrothieno[3,4-b][1,4]dioxin-7-yl)vinyl)-3,3-dibutyl-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepine