Synthesis of polyphenylene derivatives by thermolysis of enediynes and dialkynylaromatic monomers
作者:Jens A John、James M Tour
DOI:10.1016/s0040-4020(97)00977-0
日期:1997.11
Described are the syntheses of substituted enediynes and dialkynylaromatics using Pd- or cross coupling procedures. The products were then thermalized to afford the corresponding poly(p-phenylene)s, poly(1,4-naphthalene)s, poly(benzo[c]thiophene)s, and poly(dibenzothiophene)s. Fifteen examples are provided that show the scope of the polymerization process based upon substituent patterns and cyclization
描述了使用Pd-或交叉偶联方法的取代烯二炔和二炔炔衍生物的合成。然后将产物加热,得到相应的聚(对苯撑),聚(1,4-萘),聚(苯并[ c]]噻吩和聚(二苯并噻吩)。提供了十五个实例,其基于取代基图案和环化部分显示了聚合过程的范围。使用热重分析法证明了新衍生的聚合物具有极好的热回弹性。通常使用与聚合物重复单元结构相似的小分子的红外数据相关性来确定聚合物的结构。由GCMS分析的二聚中间体的自由基捕获进一步证实了所提出的机理路线。通过监测单体消耗程度相对于聚合物分子量来确定逐步增长的聚合方式。