Metals in the synthesis of macrocycles. Part I. Metal complexes of 2,6-bis-(1-iminoisoindolin-3-ylideneamino)pyridine as templates
Abstract
The copper(II), nickel(II), and gold(III) complexes of 2,6-bis-(1-iminoisoindolin-3-ylideneamino)pyridine react with 1,3-di-iminoisoindoline to give the corresponding metal derivatives of the macrocycle 5,27:7,12:14,19-tri-imino-21,25-nitrilo-21H-tribenzo[c,h,m][1,6,11,16]tetra-azacycloheneicosine (cf. Ring Index No. 11469).