Nobuyuki Gotoh

Preparation of a conjugated tautomer of 1,14:7,8-diethenotetrapyrido-[2,1,6-de:2′,1′,6′-gh:2″,1″,6″-kl:2‴,1‴,6‴na][1,3,5,8,10,12]hexa-azacyclotetradecine and its metal derivatives

A hexa-aza-macrocyclic compound of high thermal stability is readily obtained from 2,9-diamino-1,10-phenanthroline by its thermolysis or by its condensation with 2,9-dihalogeno-1,10-phenanthroline. The structure of this macrocycle has been established as a conjugated system of a novel type, related to some extent to porphin and phthalocyanin. The macrocyclic compound forms copper, cobalt, and nickel complexes.

Synthesis of a novel macrocyclic compound and of its copper complex

Condensation of 2,9-diamino- and 2,9-dichloro-1,10-phenanthroline gave a novel macrocyclic ligand in excellent yield.