The new bioglycerol-based carbon catalyst acts as an efficient, readily available, and reusable catalyst for the synthesis of 2,4,5-trisubstituted imidazoles/1,2,4,5-tetrasubstituted imidazoles, when aromatic aldehyde, ammonium acetate/amine, and 1,2-diketone are reacted in acetonitrile. (C) 2011 Elsevier Ltd. All rights reserved.
Synthesis, fluorescence properties and selective Cr(III) recognition of tetraaryl imidazole derivatives bearing thiazole group
作者:Bing Zhao、Ya-Cui Zhou、Meng-Jiao Fan、Zhi-Yu Li、Li-Yan Wang、Qi-Gang Deng
DOI:10.1016/j.cclet.2013.01.031
日期:2013.3
Three tetraaryl imidazole derivatives 5a-5c bearing thiazole groups were synthesized in the presence of [Bmin]Br by one-pot reaction and their structures were fully characterized by the H-1 NMR, IR, MS and elemental analysis. The results of UV-vis spectra and fluorescent spectra upon metal ions complexation show that compound 5a displays high selectivity and sensitivity for Cr3+ ions. The complexation ratio of compound 5a and Cr3+ is 1:1. (c) 2013 Bing Zhao. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.