Synthesis and properties of 4,4′-bipyridine based tetracationic carbazolophanes |
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Authors: | Perumal Rajakumar Karuppannan Sekar |
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Affiliation: | Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, Tamil Nadu, India |
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Abstract: | The precyclophane derived from 3,6-bis(bromomethyl)-9-ethylcarbazole and 5 equiv of 4,4′-bipyridine underwent macrocyclization on quaternization with various dibromides including 3,6-bis(bromomethyl)-9-ethylcarbazole to give carbazole-paraquat, self-complementary, cyclophanes revealing distinct charge-transfer and electrostatic interactions. The macrocyclic carbazolophane 1 was also obtained by a one-pot quaternization technique using equimolar amounts of 3,6-bis(bromomethyl)-9-ethylcarbazole and 4,4′-bipyridine. |
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Keywords: | Carbazolophanes 4,4&prime -Bipyridine Charge transfer Redox potential |
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