Preparation of macrocyclic compounds by thermal dimerization of 1,10-phenanthroline derivatives

Abstract

An efficient non-template synthesis of a new macrocycle, a conjugated tautomer of 1,14 : 7,8-diethenotetrapyrido-[2,1,6-cd:2′,1′,6′-gh :2″,1″,6″-jk:2‴,1‴,6‴-na][1,4,8,11]tetra-azacyclotetradecine (3), is described. The thermal behaviour of several disubstituted 1,10-phenanthrolines towards dimerization is studied by use of differential thermal analysis and thermogravimetric analysis, and some spectroscopic properties of the macrocycles produced are described.