POLY(ARYLENE)S CONTAINING STRUCTURAL UNITS DERIVED FROM THE 1,2-DIKETO BUILDING BLOCK

1,2-Diketones may serve as starting materials for various carbo- or he terocyclic organic compounds. Two different synthetic routes towards p oly(arylene)s containing structural units derived from the 1,2-diketo building block are presented. The first route involves the generation of polymeric 1,2-diketones via aryl-aryl coupling, followed by polymer -analogous derivatisation. The second synthetic sequence includes form ation of the 1,2-diketo derivatives on the stage of monomeric compound s and subsequent polycondensation of these monomers. In this manner, a romatic polymers possessing the quinoxaline, 1,2,4-triazine and tetrap henylcyclopentadienone subunits are available. The polymeric 1,2,4-tri azines are particularly attractive because they offer the possibility of a thermal conversion into polymers containing the diphenylacetylene building block.