Synthesis and application of an efficient calix[4]arene-based anion receptor bearing imidazole groups for Cr(VI) anionic species

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• 作者：Mustafa Tabakci^a ; ^{mtabakci@selcuk.edu.tr} ; Begum Tabakci^b ; A. Dincer Beduk^b
• 关键词：Calix[4]arene ; Amine ; Anion receptor ; Cr(VI) anionic species ; Extraction
• 刊名：Tetrahedron
• 出版年：2012
• 期刊代码：107_00404020
• 类别：ch
• 出版时间：3 June, 2012
• 卷：68
• 期：22
• 页码：4182-4186
• 文件大小：256 K

摘要

We synthesized the new calix[4]arene amines bearing two and four imidazole or tert-butylamine moieties (9a,b/10a,b) by the reaction of di- or tetra-tosylated calix[4]arene derivatives (7 and 8, respectively) with 1-(3-aminopropyl)imidazole and/or tert-butylamine, respectively. After the characterization of 9a,b/10a,b their extraction abilities toward Cr(VI) anionic species (CAS) was evaluated and compared by the liquid-liquid extraction method. The extraction results revealed that calix[4]arene amine having four imidazole groups (10a) was an efficient anion receptor for CAS. Moreover, the extraction of CAS by 10a in the presence of other anions such as Cl^{鈭?/sup>, NO₃鈭?/sup>, and PO₄3鈭?/sup> showed that 10a could be a selective anion receptor for CAS in the presence of those anions.}