The Pd-catalyzed three-component coupling polycondensation of diiodoarenes, nonconjugated dienes, and carbonucleophiles afforded poly(arylene alkenylene)s with moderate molecular weight in good yield. The reaction involves Mizoroki-Heck coupling, olefin migration via chain walking, and addition of the carbonucleophile to the resulting π-allylpalladium species. The polymerization with a slight excess of nucleophile with respect to diiodoarene also proceeded to give the polymer without significant decrease in molecular weight in spite of the nonstoichiometric mixture of the monomers. The Pd-catalyzed three-component coupling polycondensation of diiodoarenes, nonconjugated dienes, and diimide also proceeded. The base used in the reaction is critical for yield and molecular weight of the product. The reaction using NaHCO₃ afforded the product with low solubility, which can be explained by the high molecular weight of the polymer and/or the strong interaction of the electron donating dimethoxyphenylene groups and electron accepting diimide groups in the polymer. © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019, 57, 2535–2542

中文翻译：

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Pd 催化二碘芳烃、非共轭二烯和涉及链行走异构化的亲核试剂的三组分偶联缩聚合成聚亚芳基亚烯基

Pd 催化的二碘芳烃、非共轭二烯和碳亲核试剂的三组分偶联缩聚反应以良好的收率提供了中等分子量的聚亚芳基亚烯基。该反应涉及 Mizoroki-Heck 偶联、通过链行走的烯烃迁移以及将碳亲核试剂添加到所得的 π-烯丙基钯物质中。尽管单体的非化学计量混合物，但相对于二碘代芳烃略微过量的亲核试剂的聚合也进行得到聚合物，而分子量没有显着降低。Pd催化的二碘芳烃、非共轭二烯和二亚胺的三组分偶联缩聚反应也进行了。反应中使用的碱对产物的产率和分子量至关重要。使用 NaHCO _3的反应提供了具有低溶解度的产物，这可以通过聚合物的高分子量和/或聚合物中给电子的二甲氧基亚苯基和接受电子的二酰亚胺基团的强相互作用来解释。© 2019 Wiley Periodicals, Inc. J. Polym。科学，A 部分：Polym。化学。2019 , 57 , 2535–2542