An optically active cyclam ligand bearing a functionalized side chain appended to a ring carbon and its nickel(i1) complex are readily prepared from a diamino acid precursor.Among the wealth of macrocyclic polyamine ligands the cyclamt family has enjoyed particular favour for its ability to impart kinetic and thermodynamic stability to various oxidation states of ligated transition metals.l.2 Recently, cyclam derivatives bearing functionalized side chains have been investigated wherein the pendant group may provide either an additional ligating site or a point of further synthetic elabora-? Cyclam = 1,4,8,11-tetra-azacyclotetradecane.
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