(Hetero)aryl bis-acid chlorides and terminal alkynes, or likewise acid chlorides and terminal dialkynes, and ethyl 2-mercaptoacetate can be reacted to give highly luminescent symmetrical terthiophenes and quinquethiophenes in the sense of a consecutive pseudo-five-component reaction in good to excellent yields. Further functionalization of the obtained oligomers can be readily achieved by halogenation followed by a metal-catalyzed coupling reaction to give α,ω-diester substrates for subsequent transformations into highly functionalized materials.
(Hetero)芳基双酸
氯化物和末端
炔烃,或是类似的双酸
氯化物和末端二
炔烃,以及乙基2-
巯基乙酸酯可以反应生成高发光对称三
硫杂
戊搭烯和五
硫杂癸搭烯,这是一系列连续的伪五组分反应,产率良好至优秀。通过卤化反应后再进行
金属催化的偶联反应,可以轻易地对获得的低聚物进行进一步功能化,生成α,ω-二酯基底物,进而通过后续反应转化为高度功能化的材料。