Journal
TETRAHEDRON LETTERS
Volume 49, Issue 46, Pages 6575-6578Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2008.09.036
Keywords
Reductive amination; Crown ethers; Formyl-(oligo)thiophene; (Oligo)thiophene; Chemosensors
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Funding
- Fundacao para a Ciencia e Tecnologia (Portugal) [PTDC/QUI/66250/2006, SFRH/BD/36396/2007, SFRH/BD/35905/2007]
- Fundação para a Ciência e a Tecnologia [PTDC/QUI/66250/2006, SFRH/BD/35905/2007, SFRH/BD/36396/2007] Funding Source: FCT
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Three new (oligo)thiophene bipendant-armed ligands 2a-c, derived from 2-(aminomethyl)-15-crown-5, have been synthesized and characterized. Compounds 2a-c were prepared by reductive amination of the corresponding macrocycle with formyl thiophene derivatives la-c in the presence of NaBH(ClAc) in fair, to good yields. The photophysical properties of ligands 2a-c were Studied and they were also evaluated as chemosensors in the presence of Na(I), Ag(I), Pd(II) and Hg(II) cations in acetonitrile Solution. (C) 2008 Elsevier Ltd. All rights reserved.
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