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An approach to the synthesis of chemically modified bisazocalix[4] arenes and their extraction properties

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dc.creator Gulce, A
dc.creator Deligoz, H
dc.creator Karci, F
dc.creator Sener, I
dc.creator Tilki, T
dc.date 2005-10-03T00:00:00Z
dc.date.accessioned 2021-12-03T12:03:15Z
dc.date.available 2021-12-03T12:03:15Z
dc.identifier d4c4b634-8dcd-4330-afea-db81d60edb37
dc.identifier 10.1016/j.tet.2005.07.078
dc.identifier https://avesis.sdu.edu.tr/publication/details/d4c4b634-8dcd-4330-afea-db81d60edb37/oai
dc.identifier.uri http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/95116
dc.description Bisazocalix[4]arenes [N,N'-bis(5-azo-25,26,27-tribenzoyloxy-28-hydroxycalix[4]arene)benzene (1), N,N'-bis(5-azo-25,26,27-tribenzoyloxy-28-hydroxycalix [4] arene)biphenyl (2) and N,N'-bis(5-azo-25,26,27-tribenzoyloxy-28-hydroxycalix[4]arene)-2,2'-dinitro biphenyl (3)] have been synthesized from 25,26,27-tribenzoyloxy-28-hydroxycalix [4] arene by diazocoupling with the corresponding aromatic diamines (p-phenylenediamine, 4,4'-diamino biphenyl and 4,4'-diamino-2,2'-dinitrobiphenyl). Extraction studies of bisazocalix[4]arenes 1, 2, and 3 show no difference in their extraction behavior and selectivity, whereas azocalix[4]arenes are a poor extractant for heavy metal cations. The absorption spectra of the prepared bisazocalix[4]arenes are discussed, both the effect of varying pH and solvent upon the absorption ability of bisazocalix[4]arenes. (c) 2005 Elsevier Ltd. All rights reserved.
dc.language eng
dc.rights info:eu-repo/semantics/closedAccess
dc.title An approach to the synthesis of chemically modified bisazocalix[4] arenes and their extraction properties
dc.type info:eu-repo/semantics/article


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