3-Amidocoumarins as chemodosimeters to trap cyanide through both Michael and intramolecular cyclization reaction

Two 3-amidocoumarin derivatives have been utilized as doubly activated Michael acceptors to selectively and sensitively trap cyanide with remarkable colorimetric and fluorescent response. Single-crystal structures of the cyanide adducts clearly confirm Michael additions taking place at the 4-positio...

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Bibliographic Details
Published in:Sensors and actuators. B, Chemical Chemical, 2012-11, Vol.174, p.500-505
Main Authors: Sun, Yunhui, Wang, Yuanyuan, Cao, Duxia, Chen, Huihui, Liu, Zhiqiang, Fang, Qi
Format: Article
Language:English
Subjects:
Amidocoumarins
colorimetry
coumarin
Cyanide anion
cyanides
Cyclization reaction
fluorescence
Michael acceptor
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Summary:Two 3-amidocoumarin derivatives have been utilized as doubly activated Michael acceptors to selectively and sensitively trap cyanide with remarkable colorimetric and fluorescent response. Single-crystal structures of the cyanide adducts clearly confirm Michael additions taking place at the 4-position of coumarin, then an unexpected intramolecular cyclization reaction between the cyano and amido groups occurring.
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2012.08.061