N-Tosylpyrrolidine calix[4]pyrrole: synthesis and ion binding studies.
N-Tosylpyrrolidine calix[4]pyrrole: synthesis and ion binding studies.
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DOI:
10.1021/jo101882r
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发表时间:
2011-02-18
影响因子:
3.6
通讯作者:
Sessler, Jonathan L.
中科院分区:
文献类型:
--
作者:
Kim, Sung Kuk;Gross, Dustin E.;Cho, Dong-Gyu;Lynch, Vincent M.;Sessler, Jonathan L.
The synthesis and preliminary solution phase ion binding properties of the N-tosylpyrrolidine calix[4]pyrrole 2 are reported. This β-octaalkyl substituted calix[4]pyrrole, the first to be prepared via a direct condensation reaction, was obtained by reacting the 3,4-alkyl-functionalized pyrrole 8 with acetone in the presence of an acid catalyst. On the basis of 1H NMR spectroscopic analyses and isothermal titration calorimetry, it was concluded that, compared with the parent, β-unsubstituted calix[4]pyrrole (1), compound 2 possesses significantly enhanced binding ability for halide anions in chloroform. Furthermore, 2 proved capable of solubilizing in chloroform solution the otherwise insoluble salts, CsF and CsCl. These effects are ascribed to the interactions between the four tosyl groups present in 2 and the counter cations of the halide anion salts.
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影响因子:
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DOI:
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发表时间:
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影响因子:
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作者:
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通讯作者:
Sessler, JL