S. Sasaki et M. Iyoda, SYNTHESES AND REDOX PROPERTIES OF DIAMINES, TRIAMINES, TETRAAMINES, AND PENTAAMINES, Chemistry Letters, (11), 1995, pp. 1011-1012
A series of di-, tri-, tetra-, and pentaamines were synthesized as pre
cursors for corresponding di-, tri-, tetra-, and penta(aminium radical
-cations) by the aryl-N bond formation reaction between aryl iodides a
nd in situ prepared copper amide in refluxing pyridine. Cyclic voltamm
ograms of meta-connected derivatives consisted of irreversible waves w
hich imply side reactions in addition to oxidation to aminium radical-
cations.