Diazo coupling between calixarene and five substituted benzenediazonium ions in tetrahydrofuran at 5°C in the presence of pyridine afforded the tetrasubstituted calixarenes as main products and small amounts of mono-, di- and tri-substituted calix arenes even in the presence of unchanged calixarene: the unusual autoaccelerative substitution reaction is attributed to the specific hydrogen-bonding effect among the calixarene OH groups. The products were applied as new 'chromophoric calixarenes,' which selectively recognised Li+.
|Number of pages||5|
|Journal||Journal of the Chemical Society, Perkin Transactions 1|
|Publication status||Published - Dec 1 1990|
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