A conceptually novel approach for a stepwise one-pot synthesis of oligomeric poly(phenylvinylene) (PPV, â[C6H4âCHCH]â) analogs with extended Ï-conjugation of the type Hâ[CHC(Ar)âC6H4âC(Ar)CH]nâH (n = 2, 4), from the corresponding dienic monomers (n = 1), has been studied. The oligomerizations were performed in high yields by repeating the sequential preparation of the mercuric trifluoroacetate derivative Hâ[CHC(Ar)âC6H4âC(Ar)CH]nâHgCO2CF3 (n = 1, 2) and its coupling in the presence of PdCl2. The feasibility of this approach was demonstrated by a one-pot preparation of several tetramers, directly from the corresponding monomers.
我们研究了一种概念新颖的方法,即从相应的二元单体(n =  1)一步法合成具有 Hâ[CHC(Ar)â
C6H4âC(Ar)CH]nâH (n =  2、4)型扩展Ï-共轭的低聚聚聚
苯乙烯(PPV,â[ âCHCH]â)类似物。通过重复
三氟乙酸汞衍
生物 Hâ[CHC(Ar)â âC(Ar)CH]nâHgCO2CF3 (n = 1, 2)的连续制备及其在 PdCl2 存在下的偶联,以高产率实现了低聚物化。这种方法的可行性体现在直接从相应的单体一锅制备出了几种四聚体。