Synthesis and Properties of Upper Rim Schiff Base Calix[4]arenes |
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| Authors: | Tie-Dong Guo Qi-Yu Zheng Lian-Ming Yang Zhi-Tang Huang |
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| Institution: | (1) Institute of Chemistry, The Chinese Academy of Sciences, Beijing, 100080, China |
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| Abstract: | The synthesis and properties of upperrim Schiff base calix4]arenes are described in thisarticle. Tetrakis-p-bromomethylcalix4]arene(1) reacts with hexamethylenetetramine to givetetrakis-p-formylcalix4]arene (2) in highyield. Then upper rim Schiff base calix4]arenes 3 can be easily synthesized by 2 reacting withappropriate alkylamines. The complexation ability of3 toward transition metals Pb2+, Cu2+and Co2+ was studied by UV-VIS spectrophotometry. |
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| Keywords: | Schiff base calixarene upper rim complexation transition metals |
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