Stepwise construction of novel zig-zag shaped thiophene-based back-to-back terpyridine ligands with acetylenic tethers
作者:Antoinette De Nicola、Céline Ringenbach、Raymond Ziessel
DOI:10.1016/s0040-4039(02)02386-9
日期:2003.1
cross-coupling of halogenated thiophene units with acetylene grafted terpyridine effectively yields ethynylated thiophenes. Deprotection of the propargylic fragment provides additional building blocks, which could be used in an iterative sequence of reactions. Reliable and practical synthetic routes are now available for the construction of very large polytopic frameworks.
通过交叉结合的方法合成了一系列结构清晰的分子级金属丝,它们带有一个至五个2,5-二乙炔基-3,4-二丁基噻吩间隔基和2,2':6',2''-吡啶吡啶封端单元-偶联反应和脱保护步骤。钯催化的卤代噻吩单元与乙炔接枝的联吡啶的交叉偶联有效地产生了乙炔化的噻吩。炔丙基片段的脱保护提供了额外的结构单元,其可以用于反应的迭代序列中。如今,可靠,实用的合成路线可用于构建非常大型的多面体框架。