Synthesis and evaluation of bipendant-armed (oligo)thiophene crown ether derivatives as new chemical sensors

TETRAHEDRON LETTERS

卷:49

Article

Batista, Rosa M. F.²  Oliveira, Elisabete¹  Costa, Susana P. G.²  Lodeiro, Carlos¹  Raposo, M. Manuela M.² 

[1] Univ Nova Lisboa, Fac Ciencias & Tecnol, Dept Quim, REQUIMTE, P-2829516 Monte De Caparica, Portugal

[2] Univ Minho, Ctr Quim, P-4710057 Braga, Portugal

关键词: Reductive amination;    Crown ethers;    Formyl-(oligo)thiophene;    (Oligo)thiophene;    Chemosensors;   

DOI  :  10.1016/j.tetlet.2008.09.036

来源: Elsevier

【 摘 要 】

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.

【 授权许可】

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