Template Synthesis of Copper(II)Complexes of N_3O-Donor Macrotricycles Containing N-CH_2-N and N-CH_2-O Linkages

摘要

Various types of macrocyclic compounds containing mixed donors of nitrogen and oxygen have been prepared and investigated.Much of this activity has been associated with the synthesis of macrocyclic ligands that exhibit high selectivity for specific metal ions.In most cases,the preparation of mixed donor macrocyclic compounds requires several steps and/or results in low yield.Metal directed condensation reactions involving coordinated polyamines and formaldehyde have been utilized for the preparation of various types of saturated polyaza macrocyclic compounds that could not be prepared by other methods.For example,the nickel(II)and copper(II)complexes of L~4 and L~5 containing N-CH_2-N linkages have been prepared by the one-pot reactions of Eqs.(1)and(2).