Azacalixarenes derived from p-tert-butylphenol are generated by an intramolecular aryl amination strategy as the ring-closing step. The reaction produces the first examples of larger p-tert-butylcalixarenes with regioselective substitution of bridging methylenes with nitrogen atoms.
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| http://dx.doi.org/10.1021/ol8028912 | DOI Listing |
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