Unexpected cleavage of upper rim-bridged calix[4]arenes leading to linear oligophenolic derivatives
摘要：
Regioselective meta-mercuration followed by Pd-catalysed intramolecular bridging gave birth to a novel type of calixarene bearing a single bond bridge between the meta positions of neighbor aromatic subunits. These bridged derivatives possess extremely distorted cavities that imply possible amended properties over common calix[4]arenes. This new type of calixarene reactivity can be documented by acid-/electrophile-mediated cleavage of the basic macrocyclic skeleton leading to open oligomeric structures—the behavior of which has never been observed before in classic calix[4]arenes bearing alkoxy groups on the lower rim.
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DOI：
10.1039/C7OB03101G
年份：
2018
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