Journal
ORGANIC & BIOMOLECULAR CHEMISTRY
Volume 9, Issue 20, Pages 7007-7010Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1ob05871a
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Funding
- National Natural Science Foundation of China [20872038, 21072064]
- Natural Science Foundation of Guangdong Province, China [10351064101000000]
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An efficient method for the synthesis of copillar[5]arenes was developed with FeCl(3) as catalyst and different 1,4-dialkoxybenzenes and paraformaldehyde as reactants (yields: 50-85%). The host-guest property of (co)pillar[5]arenes and terminal dibromoalkanes was investigated by (1)H NMR measurements and an X-ray study. The complexation behavior of the copillar[5]arenes can be tuned by changing the substituents on the host. A complete complexation selectivity was found between pillar[5]- and pillar[6]arenes, which is an interesting aspect for sensor techniques.
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