Novel hyperbranched molecules containing pyrrole units were obtained from ortho-, meta-, and para-diaminodiphenyldiacetylenes, as AB(2) type monomers by one-step polymerization. Diacetylenic fragments reacted with terminal amino groups in the presence of copper chloride to give pyrrole units. Diaminodiphenyldiacetylene monomers have been synthesized from ethynilanilines in three steps. The novel monomers and hyperbranched molecules were characterized by NMR, IR and thermal analysis.