CALIX[N]ARENES .4. INTERACTION OF TERT-BUTYLCALIX[N]ARENES WITH CYCLIC AMINES

p-tert Butylcalix[n]arenes 1 and 2 react with the cyclic amines 3 - 8, 10 by proton transfer forming so -called ''exo-complexes'' between the ammonium and phenolate groups. As well endocyclic as exocyclic amino groups are reactive. The nitroxyl radical 9 does not react with 1 or 2 by the proton transfer reaction. These results demonstrate that an interaction between the nitrogen atom of HALS-compounds, esp. compound 10, with calix[n]arene hydroxylgroups is possible, but an interaction between the corresponding nitroxyl radicals with calix[n]arene hydroxylgroups does not occur.