کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5225277 | 1383543 | 2007 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis and dichromate anion extraction ability of p-tert-butylcalix[4]arene diamide derivatives with different binding sites Synthesis and dichromate anion extraction ability of p-tert-butylcalix[4]arene diamide derivatives with different binding sites](/preview/png/5225277.png)
The article describes the synthesis and evaluation of the dichromate anion (Cr2O72â/HCr2O7â) extraction properties of p-tert-butylcalix[4]arene diamide derivatives (5-7) containing different binding sites. Among these compounds, 6 and 7 have been synthesized via aminolysis in a toluene-methanol solvent system with 3-aminomethylpyridine and 3,6-dioxa-1,8-diamino octane, respectively. On the other hand, compound 5 has been synthesized via an acid chloride method due to its inefficiency under aminolysis. The extraction properties of these diamides toward dichromate anions are studied by liquid-liquid extraction. The results show that p-tert-butylcalix[4]arene diamide derivative 7 exhibited a much higher affinity toward dichromate anions than that of 6 due to its special structure, while 5 was an ineffective ligand for these anions.
The article describes the synthesis and evaluation of dichromate anion extraction abilities of p-tert-butylcalix[4]arene diamides (5-7) containing various binding moieties.
Journal: Tetrahedron - Volume 63, Issue 23, 4 June 2007, Pages 5000-5005