7-[(E)-2-[7-[(E)-2-(3,3-dibutyl-2,4-dihydrothieno[3,4-b][1,4]dioxepin-6-yl)vinyl]-2,3-dihydrothieno[3,4-b][1,4]dioxin-5-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86%的产率得到6-[(E)-2-[5-[(E)-2-[7-[(E)-2-[4-[(E)-2-[5-[(E)-2-[7-[(E)-2-(3,3-dimethyl-2,4-dihydrothieno[3,4-b][1,4]dioxepin-6-yl)vinyl]-2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl]vinyl]-2,3-dihydrothieno[3,4-b][1,4]dioxin-7-yl]vinyl]-2,5-bis(2-ethylhexyloxy)phenyl]vinyl]-2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl]vinyl]-2,3-dihydrothieno[3,4-b][1,4]dioxin-7-yl]vinyl]-3,3-dimethyl-2,4-dihydrothieno[3,4-b][1,4]dioxepine