Synthesis of two calix[4]arene diamide derivatives for extraction of chromium(VI)

被引：44

作者：

Bozkurt, S ^{[1
]}

Karakucuk, A ^{[1
]}

Sirit, A ^{[1
]}

Yilmaz, M ^{[1
]}

机构：

[1] Selcuk Univ, Dept Chem, TR-42031 Konya, Turkey

来源：

TETRAHEDRON | 2005年 / 61卷 / 44期

关键词：

calix[4]arene; dichromate anions; solvent extraction; diamide;

D O I：

10.1016/j.tet.2005.08.072

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The synthesis of four diamide derivatives of the p-tert-butylcalix[4]arenes from the reaction of 5,11,17,23-tetra-tert-butyl-25,27diethoxycarbonylmethoxy-26,28-dihydroxycalix[4]arene 2 with various primary amines were reported. The H-1 and C-13 NMR, data showed that the synthesized compounds exist in the cone conformation. The complexing properties of these compounds toward Cr2O72-/HCr2O7- anions are also studied. It has been observed that receptors 5 and 6 are better extractant than the compounds 3 and 4. The protonated alkyl ammonium form of 5 and 6 is an effective extractant for transferring HCr2O7-/Cr2O72- anions from an aqueous phase into a dichloromethane layer. (c) 2005 Elsevier Ltd. All rights reserved.

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页码：10443 / 10448

页数：6

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