2-[4-[Bis(2-hydroxyethyl)amino]phenyl]cyclohexa-2,5-diene-1,4-dione 、
4-[2-[2-[2-[2-[[2-(5,6-Dihydro-[1,3]dithiolo[4,5-b][1,4]dithiin-2-ylidene)-1,3-dithiol-4-yl]sulfanyl]ethoxy]ethoxy]ethoxy]ethoxy]-4-oxobutanoic acid 在
4-二甲氨基吡啶 、
N,N'-二环己基碳二亚胺 作用下,
以
二氯甲烷 为溶剂,
以17.6%的产率得到1-O-[2-[N-[2-[4-[2-[2-[2-[2-[[2-(5,6-dihydro-[1,3]dithiolo[4,5-b][1,4]dithiin-2-ylidene)-1,3-dithiol-4-yl]sulfanyl]ethoxy]ethoxy]ethoxy]ethoxy]-4-oxobutanoyl]oxyethyl]-4-(3,6-dioxocyclohexa-1,4-dien-1-yl)anilino]ethyl] 4-O-[2-[2-[2-[2-[[2-(5,6-dihydro-[1,3]dithiolo[4,5-b][1,4]dithiin-2-ylidene)-1,3-dithiol-4-yl]sulfanyl]ethoxy]ethoxy]ethoxy]ethyl] butanedioate