217792-57-9Relevant academic research and scientific papers
Synthesis and reactivity of calix[4]arene-based copper complexes
Xie, Dejian,Gutsche, C. David
, p. 9270 - 9278 (2007/10/03)
The interaction of copper and oxygen with calix[4]arenes carrying one or two chelating moieties on the upper rim has been investigated. The chelating moieties include pyrazolylethyl and pyridylethyl functions attached to an amino nitrogen separated from the calixarene rim by one or two methylene groups. The products obtained by treatment of the pyrazole-based calixarenes with Cu(I) and Cu(II) are stable to oxidation (by O2) and reduction (by MeOH), respectively. Those produced by treatment of the pyridine-based calixarenes with Cu(I), however, are more reactive and undergo intramolecular oxidation at the benzylic carbon of the chelate-containing side chain. Putative pathways for the decomposition of the dicopper-dioxygen complexes are discussed.
