Polymerisation of the 3-halogenomethyl-5-methyl(or 5-phenyl)-3′(5′)-methyl-1,5′(3′)-dipyrazolylmethane. Synthesis of new macrocyclic systems

Abstract

The study of the polymerisation of the 3-halogenomethyl-5-methyl(or 5-phenyl)-3′(5′)-methyl-1,5′(3′)-dipyrazolylmethane allowed the isolation of five new macrocyclic compounds with four or six pyrazole rings. Their structures have been determined by mass spectrometry and proton nmr spectroscopy.A scheme is proposed which takes into account the different possible orientations of this reaction.