引用本文:
卢奎, 苑乃香, 周稚仙, 吴养洁. 四乙氧羰基甲氧基杯[4]芳烃的合成与性质[J]. 应用化学,
2002, 19(10): 958-962.
Citation: LU Kui, YUAN Nai-Xiang, ZHOU Zhi-Xian, WU Yang-Jie. Synthesis and Property of Tetraethoxy-carbonylmethoxy calix [4]arene[J]. Chinese Journal of Applied Chemistry, 2002, 19(10): 958-962.
Citation: LU Kui, YUAN Nai-Xiang, ZHOU Zhi-Xian, WU Yang-Jie. Synthesis and Property of Tetraethoxy-carbonylmethoxy calix [4]arene[J]. Chinese Journal of Applied Chemistry, 2002, 19(10): 958-962.
四乙氧羰基甲氧基杯[4]芳烃的合成与性质
摘要:
通过杯[4]芳烃与溴乙酸乙酯的反应制得了25,26,27,28-四乙氧羰基甲氧基杯[4]芳烃,并经元素分析、IR、UV、1H NMR、13C NMR和MS等分析证实了产物的结构。用荧光光谱法研究了产物与稀土(Ⅲ)硝酸盐在乙腈溶液中的配位作用,由Hilderbrand-Benesi公式计算出配合物的稳定常数和配位反应的Gibbs自由能变化。结果表明,所得环芳烃与稀土(Ⅲ)硝酸盐在乙腈溶液中具有较强的配位能力,对苦味酸钠具有很强的液膜传递能力和配位选择性。
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关键词:
- 四乙氧羰基甲氧基杯[4]芳烃
- / 合成
- / 配位作用
- / 液膜传递
English
Synthesis and Property of Tetraethoxy-carbonylmethoxy calix [4]arene
Abstract:
25, 26, 27, 28-Tetraethoxycarbonylmethoxy calix [4]arene(3) was synthesized by reacting calix [4]arene(2) with ethyl bromoacetate using K2CO3 as base in acetone. The structure of (3) was characterized by elmenetal analysis, IR, UV, MS, 1H and 13C NMR spectra. Compound 3 exist in "partial cone" conformations. The coordination behavior of the compound with four rare earth metal(Ⅲ) nitrates in acetonitrile were studied by fluorescence spectrometry. The stability constants(lg Ks) of the complexes of 3 with rare earth metal(Ⅲ) nitrates and Gibbs free energy change(-ΔG0) of the coordination reactions were calculated according to the modified Hilderbrand-Benesi equation. The calix [4]arene obtained exhibited a strong coordination ability with rare earth nitrates and good transportability for alkali metal ions throungh liquid membrane in order of Na+> K+> Li+.
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Key words:
- tetraethoxycarbonylmethoxy calix [4]arene
- / synthesis
- / coordination
- / ion transportation
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