Tetrahedron

Tautomeric crown-containing chemosensors for alkali-earth metal cations

AD Dubonosov, VI Minkin, VA Bren, EN Shepelenko…

Index: Dubonosov, Alexander D.; Minkin, Vladimir I.; Bren, Vladimir A.; Shepelenko, Evgenii N.; Tsukanov, Alexey V.; Starikov, Andrey G.; Borodkin, Gennadii S. Tetrahedron, 2008 , vol. 64, # 14 p. 3160 - 3167

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Citation Number: 41

Abstract

Crown-containing arylimines of 5-hydroxy-and 5-hydroxy-6-nitro-2, 3-diphenylbenzo [b] furan-4-carbaldehydes were synthesized and their structure, spectral, luminescent, and complexing properties were studied by means of 1H and 13C NMR, IR, UV, and mass- spectrometry. In solution, these compounds exist as equilibrium mixtures of benzenoid and quinoid tautomers. The relative concentration of the quinoid form increases in the order of ...