Haloarene 1,2-dihaloarene

Haloarene derivatives used for coordination polycondensation are primarily represented by halostyrenes and haloarylacetylenes which undergo selfcoupling to poly(arylene vinylene)s [scheme (2)] and poly(aryleneacetylene)s [scheme (3)] respectively, and by dihaloarenes which, mainly in a combination with alkenes or divinylarenes and acetylenes or diacetylenes, undergo crosscoupling to poly(arylene vinylene)s [schemes (4) and (5)] and poly(arylene acetylene)s [schemes (6) and (7)] respectively [2] ... 

The Heck reaction has been applied to couple quite a variety of dihaloarenes with different diethenylarenes to give various polyvinylenearylene polymers. In some cases, analogous polymers have been obtained by Heck coupling of a-ethenyl-w-haloarenes (Table 14)... 

The carbonylations of haloarenes have also been conducted intramolecularly. Examples of these reactions to form lactams.are represented genetically in Equation 17.6P along with specific examples to form benzolactams. The carbonylations of haloarenes has also been applied to the synthesis of polymers. As shown in Equation 17.62, these reactions can be conducted between dihaloarenes and diamines to form polyaramide materials. ... 

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