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Calix[4]arene-based chromogenic chemosensor for the α-phenylglycine anion:: Synthesis and chiral recognition
被引:63
|作者:
Qing, GY
[1
]
He, YB
[1
]
Zhao, Y
[1
]
Hu, CG
[1
]
Liu, SY
[1
]
Yang, X
[1
]
机构:
[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China
关键词:
chirality;
calixarenes;
anion receptor;
chiral recognition;
UV/Vis spectra;
chromogenic sensor;
D O I:
10.1002/ejoc.200500704
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
Calix[4]arene-based two-armed chiral anion receptors 3a and 3b have been synthesized and examined for their chiral anion-binding abilities by UV/Vis absorption and H-1 NMR spectroscopy. The results of nonlinear curve fitting indicate that 3a and 3b form 1:1 stoichiometric complexes with the L- Or D-a-phenylglycine anion by multiple hydrogen-bonding interactions and exhibit good enantioselective recognition for the enantiomers of the alpha-phenylglycine anions (3a: K-ass(L)/K-ass(D) = 4.76; 3b: K-ass(D)/K-ass(L) = 2.84). The marked colour changes observed for the complexation of 3a with the chiral anions and the good enantio selective recognition reveal that receptor 3a could be used as a good chiral chromogenic chemosensor for the enantiomers of the a-phenylglycine anion. (c) Wiley-VCH Verlag GmbH & Co.
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页码:1574 / 1580
页数:7
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