Linear poly(arylene chlorovinylene) (PACV) 20 were synthesized by the rhodium-catalyzed
decarbonylative polyaddition of aromatic diynes 19ac and 13 (Scheme 4A) [36]. Notably,
although the reaction between 12 (19b) and 13 is very similar to the one depicted in Scheme 3B,
the catalyst does play an important role in determining the polymer structure. The decarbonylative
polyaddition enjoys good regio- and stereoselectivity, and the resulting PACVs 20ac all possess
high molecular weight and thermal stability. .