Nickel(II) and copper(II) azacyclam complexes can be obtained through a metal template procedure involving the pertinent open-chain tetramine, formaldehyde and a primary amide (either carboxy- or sulfonamide) as a locking fragment. Azacyclam complexes, which display the same properties and solution behavior of the corresponding cyclam analogues, can be obtained with any desired side-chain appended to the ligand’s framework, by choosing the appropriate amide derivative, through a convenient onepot synthesis. This opens the way to the design of multi centered redox systems, redox switches of fluorescence, and anion receptors of unusually high Brønsted acidity.
Template synthesis of azacyclam metal complexes using primary amides as locking fragments
FABBRIZZI, LUIGI;LICCHELLI, MAURIZIO;MOSCA, LORENZO;POGGI, ANTONIO
2010-01-01
Abstract
Nickel(II) and copper(II) azacyclam complexes can be obtained through a metal template procedure involving the pertinent open-chain tetramine, formaldehyde and a primary amide (either carboxy- or sulfonamide) as a locking fragment. Azacyclam complexes, which display the same properties and solution behavior of the corresponding cyclam analogues, can be obtained with any desired side-chain appended to the ligand’s framework, by choosing the appropriate amide derivative, through a convenient onepot synthesis. This opens the way to the design of multi centered redox systems, redox switches of fluorescence, and anion receptors of unusually high Brønsted acidity.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
