Molecular Design of Calixarene 5. Syntheses and Cation Selectivities of Novel Schiff' s Base p-tert-Butylcalix[4]arenes

• 来源期刊: 中国化学（英文版）
• 学科: 化学
• 年，卷（期）: 2001,（3）
• 页码范围: 291-295
• 页数: 5页
• 分类号: O6
• 语种: 英文

摘要

Five novel Schiff's bases p-tert-butylcalix[4]arenes have ben synthesized in high yields by the reaction of 1,3-distally disubstituted p-tert-butyicalix[4]arene amine(1) with the corresponding aromatic aldehydes,and their cation binding abilities and selectivities with alkali and heavy metal ions have been evaluated by solvent extraction of aqueous metal picrates to show the highet Ag+ extractability for Schiff' s base p-tertbutylcalix[4]arene (6) and the best Na+/Li+ and Ag+/Tl+selectivities for Schiff's base p-tert-butylcalix[4]arene (4 and 2) over any other caltx[4]arene derivatives, respectively.