模板法合成含中心功能基西佛碱型大环化合物的研究

本文报道了一种利用 Ba~(2+)作为模板离子直接合成含中心功能基西佛碱型大环化合物的方法。     

氮杂冠醚的研究ⅩⅢ.一类新型的含N,N'-二羧甲基氮支套索大环醚双内酯的合成

ＥＤＴＡ经脱水成二酐后，与Ｎ－取代的二乙醇胺反应，得到一类新型的含Ｎ，Ｎ－二羧甲基氮支套索大环醚双内酯化合物Ⅰ～Ⅳ，产物结构均经ＩＲ，１ＨＮＭＲ，ＭＳ和元素分析鉴定     

Synthesis and Chiral Recognition of a New Type of Chiral Calix[4]-arene Derivatives

Two new chiral calix[4] arenes bearing chiral pendants,which were from by-product of the antibiotic industry,were synthesized and characterized by ^1H NMR.MS-FAB and elemental analysis,Studies of ^1H NMR of the two calix[4] arene derivatives indicate that they exist in cone conformation in solution.Results of chiral recognition of the two chiral ligands 2a and 2b towards the tartaric acid derivative 3 show that ligand 2a exhibited good chiral recognition abilities compared to ligand 2b.     

阴离子生色传感器基于质子转移机理

带有酚羟基的化合物1,2和3能够用作阴离子选择性生色传感器.它们对氟离子和醋酸根离子表现出明显的颜色变化,而对其它卤素离子没有响应.这种选择性可以用质子转移机理来解释.化合物1 含有两个酚羟基,在和过量的氟离子作用时,两个酚羟基表现为逐步去质子化.紫外光谱,核磁氢谱,核磁氟谱证明了这一点.     

Synthesis and Enantioselective Discrimination of Chiral Fluorescence Receptors Bearing Amino Acid Units

Two chiral fluorescence receptors （1, 2） were synthesized, and their structures were characterized by IR, ^1H NMR, ^13C NMR, mass spectra and elemental analysis. The chiral recognition of receptors was studied by ^1H NMR and fluorescence spectra. The results demonstrate that receptors and dibenzoyl tartrate anion formed a 1 ： 1 complex. The receptor 1 exhibited a good enantioselective recognition ability toward the enantiomers of dibenzoyl tartrate anion.     

含硫脲和酰胺单元的新型杯［4］芳烃中性氟离子受体

Two-armed neutral anion receptors (4,5), calix[4]arenes beating thiourea and amide binding sites, were prepared and examined their anion-binding ability by the UV-vis spectra. The results of non-linear curve fitting and Job plot indicate that 4 or 5 forms 1：1 stoichiometry complex with fluoride by hydrogen bonding interactions. Receptors 4 and 5 have an excellent selectivity for fluoride but have no binding ability with acetate, dihydrogen phosphate and the halogen anions (Cl^-,Br^-,I^-).     

棉杆纤维素的改性(Ⅲ)——多乙撑多胺纤维素醚的制备及其吸附性能

化学改性制备纤维素衍生物对金属离子的富集分离［１～３］,膜分离［４,５］等方面的研究已有不少报道．我们近期研究［６,７］表明,由农业废弃物棉杆纤维制得的含氮纤维素醚衍生物对有毒的金属离子,尤其是对Ｈｇ２＋、Ｃｄ２＋、Ｃｒ３＋、Ｐｂ２＋离子有较好的吸附...     

双冠醚化合物的合成研究——Ⅱ.双酰胺双冠醚的合成

4＇-氨基苯并15-冠-5分别与2,6-吡啶二甲酰氯、对苯二甲酰氯、2-甲氧基-1,3-苯二甲酰氯、三甘二酰氯、己二酰氯和壬二酰氯在无水苯中缩合,可以得到相应的六种双酰胺双冠醚1～6。     

含联吡啶单元大环配体的合成

６,６‘－二羟甲基－２,２’－联吡啶（１）经与３,４－二氢哟喃（ＤＨＰ）反应得到６－羟甲基－６‘－四氢吡喃（ＴＨＰ）氧甲基－２,２’－联吡啶（２）,化合物（２）经甲磺酰化和碘化反应得到６－碘甲基－６－,四氢呋喃氧甲基－２,２‘－联吡啶（５）经缩合,醇解反应以双（６’－羟甲基０２联吡啶－６－甲基）醚（７）;（７）与６,６‘－二溴在吡啶反应得到大环配体（８）,对中间体（２）的合成条件进行了探讨,所有中     

氮杂冠醚的研究：Ⅻ.一类新型的含N,N‘—二羧甲基氮支套…

ＥＤＴＡ经脱水成二酐后，与Ｎ－取代的二乙醇胺反应，得到一类新型的含Ｎ，Ｎ’－二羧甲基氮支套索大环醚双内酯化合物Ⅰ－Ⅳ，产物结构均经ＩＲ，＾１ＨＮＭＲ，ＭＳ和元素分析鉴定。