[CHTA+][Tf2N-]离子液体作为气相色谱新型固定相的性能研究

合成了一种手性离子液体[ CHTA+][Tf2N-]((S)-(-)-(3-氯-2-羟丙基)三甲基铵双三氟甲烷磺酰亚胺),将其用作新型气相色谱固定相,考察了它的色谱性能.研究结果表明:该离子液体作为气相色谱固定相在容量因子为1.29时,其理论塔板数为2 057块/米；对醇类、酮类、芳香族化合物、位置异构体以及一些外消旋体具有良好的分离效果.     

A new 2-D chiral coordination polymer of [Zn(nicotinate)2]n

A new two-dimensional (2-D) acentric coordination polymer, [Zn(NA)₂] 2, has been synthesized under hydrothermal reaction conditions. The structure of 2 is self-assembled from square-grid nets stacked via interdigitation and crystallizes in a chiral space group Fdd2. The zinc atoms are in distorted tetrahedral sites.     

Structurally characterized zwitterionic chiral zinc imidazolium [4,4] grid

The first zwitterionic chiral imidazolium carboxylate supported molecular [4,4] grid lamellae have been synthesized and characterized.     

Functionalized [2]Rotaxanes

The synthesis of a series of dumbbell-shaped compounds, which can act as a host (e.g., toward alkali metal cations) and as a guest (e.g., toward cyclobis(paraquat-p-phenylene)) in a supramolecular context is described. The self-assembly of [2]pseudorotaxanes and [2]rotaxanes, in which cyclobis(paraquat-p-phenylene) encircles polyether chains intercepted in their middles by a hydroquinone ring and terminated at each end by 12-crown-4, 15-crown-5, monoaza-18-crown-6, 18-crown-6, or adamantyl groups, is achieved using either threading, clipping, or slipping procedures. All the [2]pseudorotaxanes and [2]rotaxanes are characterized in solution by spectroscopic means and, in the case of two of the [2]rotaxanes, by X-ray crystal structures in the solid state. In the presence of metal ions, [2]pseudorotaxanes carrying 12-crown-4 or 15-crown-5 stoppers can be disassembled in solution. The research shows how one kind of complexation can affect another kind of complexation—manifesting itself in a physical change in the system and so acting as a prototype of a potential molecular device.     

四氮杂杯[2]芳烃[2]三嗪的合成及其叠氮化研究

研究了四氮杂杯[2]芳烃[2]三嗪的合成及其叠氮化。以三聚氯氰和间苯二胺(摩尔比>2∶1)为原料,碳酸钾为缚酸剂,四氢呋喃为溶剂,在冰浴条件下合成中间体N,N’-二(4,6-二氯-1,3,5-均三嗪-2-基)-1,3-苯二胺,产率为85.8%;该中间体和间苯二胺(摩尔比为1∶1)丙酮为溶剂,在室温条件下反应,生成四氮杂杯[2]芳烃[2]三嗪,产率为45.5%;四氮杂杯[2]芳烃[2]三嗪和叠氮钠在40~50℃条件下反应生成四氮杂杯[2]-1,5-芳烃[2]-2-叠氮基-1,3,5-三嗪产率为90.0%。产物通过元素分析、红外光谱和氢谱的表征,其结构得到了确定。     

N-甲基-3,3-二甲基螺[2H-吲哚-2,3-[3H]萘并[2,1-b][1,4]噁嗪]的微波合成与表征

以三乙胺为催化剂,1-亚硝基-2-萘酚和1,3,3,-三甲基-2-亚甲基吲哚啉为原料合成了N-甲基-3,3-二甲基螺[2H-吲哚-2,3,-[3H]萘并[2,1-b][1,4]噁嗪]。本反应在无溶剂下的微波反应,相比传统有机反应大大缩短了反应时间。并且探讨了反应温度、反应时间、催化剂用量对反应的影响。对产物进行了IR、~1HNMR、~(13)CNMR等表征,结果表明:反应温度150℃,反应10 min,可以获得较高产率的纯产物。     

A new planar chiral bipyridine-ligand: pyrid-2-yl[2](1,4)benzeno[2](5,8)quinolino-phane

The synthesis of the new planar chiral heterocyclic nitrogen ligand pyrid-2-yl[2](1,4)benzeno[2](5,8)quinolino-phane ( 1 with [2.2]paracyclophane-skeleton is described. The enantiomeric resolution is achieved by HPLC. The CD-spectra of 1 and of its chiral quinoline precursor are recorded. The enantiomerically pure title compound 1 is used in copper-catalyzed asymmetric cyclopropanation of styrene and in asymmetric iridium-catalyzed transfer-hydrogenation of acetophenone.     

Osmotic pressure of catenanes in solution

Summary We propose a nonuniversal scaling for the osmotic pressure in the case of concatenating ring polymers. The size exponent depends on the molecular weight of the catenans. The effect is more significant the shorter and the stiffer the molecules are.     

7-甲基-2-芳基-2H-吡唑[3,4-e]并-1,2,4-三嗪-3-醇的合成

以寻找干扰嘌呤核酸代谢的抗肿瘤新药为目的,设计合成了嘌呤生物碱类似物。以3-甲基-5-氨基-4H-吡唑为原料,经重氮化偶合、氨解、关环等反应合成了9种新的标题类化合物,通过元素分析、1HNMR和质谱分析确定其结构。     

2-Substituierte 1,6-Methanol[10]annulene als Dienophile in der [4 + 2]-Cycloaddition mit inversem Elektronenbedarf

2-Substituted 1,6-Methano[10]annulenes as Dienophiles in the [4 + 2]Cycloaddition with Inverse Electron Demand The LUMO-diene-controlled [4 + 2] cyclo-additions of various at C-2 substituted 1,6-methano [10]annulenes 6 , 10 and 13 with the electron-deficient s-cis-fixed diazadiene system of 3,6-bis(trifluoromethyl)-1,2,4,5-tetrazine (3) are described. With the donor substituted 6 (or its valence tautomer 7 ) 3 reacts under unusually mild conditions to give the 7,12-methanocyclodeca[d]pyridazine 9 with high site selectivity. The Diels-Alder reaction of 3 with the 2-bromo-1,6-methano[10]annulene ( 10 ⇌ 11 ) leads to the 6- and 8-bromo-7,12-methanocyclodeca[d]pyridazines 12a and 12b , whereas with the various acceptor substituted species 13 ⇌ 14 the 8-substituted 7,12-methanocyclodeca[d]pyridazines 15a – c are formed exclusively. Spectroscopic data show, that for all the novel methanocyclodeca[d]pyridazines 9 , 12 and 15 the annulenic structure is dominating, but a remarkable reduction of the ring current and a distinct bond alternation is observed compared to the parent 1,6-methano[10]annulene 1 .     

功能离子液体[NH_2ebim][PF_6]的合成及其吸收CO_2的研究

采用两步法合成了离子液体1-胺乙基丁基咪唑六氟磷酸盐([NH2ebim][PF6]),进行吸收CO2的研究。结果表明,CO2与离子液体[NH2ebim][PF6]的反应摩尔比介于0.5~1.0,模拟[NH2ebim][PF6]的溶解度参数为18.09 MPa0.5,比常规离子液体的溶解度参数更接近CO2的溶解度参数,说明[NH2ebim][PF6]与CO2有更好的互溶性,利于对CO2的吸收。     

2-取代-1H-咪唑并[4,5-f][1,10]菲咯啉

2-取代-1H-咪唑并[4,5-f][1,10]菲咯啉是合成三阶非线性光学材料金属多吡啶络合物的关键中间体。本文以1,10-菲咯啉-5,6-二酮为原料,与各种醛经缩合反应合成7个2-取代-1H-咪唑并[4,5-f][1,10]菲咯啉配体,其结构经UV、1H NMR确证,收率为21.0%～74.3%,具有反应条件温和,操作简单,原料易得的优点。     

利用离子液体[BMIM]2[CR]萃取牛血清蛋白的研究

利用离子交换过程将亲和性染料刚果红合成为[BMIM]2[CR]，并进行牛血清蛋白萃取实验。研究结果表明，[BMIM]2[CR]离子液体的浓度为10mmol／L，萃取时间为30min以及溶液呈酸性时，对牛血清蛋白的萃取效果最佳，可达90％以上。该研究可为[BMIM]2[CR]实际蛋白质萃取应用中提供一定的可行性条件。     

[60]富勒烯[2+1]环加成反应研究进展

对[60]富勒烯的[2 1]环加成反应、主要试剂及反应机理进行了综述。     

四氮杂杯[2]芳烃[2]三嗪叠氮化衍生物的合成及其与RDX的配合研究

文合成了氮原子桥连杯[2]芳烃[2]三嗪化合物。室温下,以碳酸钾为缚酸剂,利用三聚氯氰和间苯二胺的亲核取代反应合成主体,并将其叠氮化,反应温度为40％。产物通过元素分析,红外光谱和氢谱对其结构进行了表征,并采用XRD对氮杂杯[4]芳烃及其衍生物与黑索今的配合性能进行了表征分析,结果表明主客体之间发生了相互作用。     

2-Azabicyclo [3.2.0] Heptane-3-One

2-Azabicyclo [3.2.0] heptane-3-one was synthesized by the reaction of cyclopentene and chlorosulphonyl isocyanate. The structure of the product was established by its hydrolysis to cis-2-amino-cyclopentanecarboxylic acid.     

相转移催化法合成新树型配体——N,N′,N″-(三苄基)-三乙氨基胺和N,N′,N″-(三苯甲酰)-三乙氨基胺

报道了以相转移催化法合成一类新有机试剂——三乙氨基胺类树型配体 N,N′,N″-(三苄基)-三乙氨基胺(TBAA)和N,N′,N″-(三苯甲酰)-三乙氨基胺(TBOAA),产率 85% 以上。此类化合物具有近似三角架形结构,能产生荧光,可以与稀土离子进行选择性配位。     

Threading Cyclodextrins in Chloroform: A [2]Pseudorotaxane

The unusual self-assembly in chloroform of a novel cyclodextrin-based [2]pseudorotaxane, composed of heptakis-2,6-di-O-methyl-3-O-acetyl-β-cyclodextrin and a viologen-containing linear component, is reported.