二茂铁衍生物的氰乙基化反应(Ⅴ)——二茂铁磺酰胺类的合成及其氰乙基化

磺酰胺类的氰乙基化反应研究得较少,据报道含有某些杂环取代的苯磺酰胺的氰乙基化产物有杀灭有害昆虫的作用。本文研究N-(取代苯基)—二茂铁磺酰胺类的氰乙基化反应,讨论苯环上的不同取代基对反应的影响。同时合成了一些未报道过的二茂铁磺酰胺。从二茂铁磺酰氯制备二茂铁磺酰胺已有报导。我们的工作主要是以二茂铁磺酰氯和     

金属有机化合物的分析——Ⅱ.二茂铁衍生物的高速液相色谱分析

二茂铁衍生物具有作为火箭燃料填充剂、有机涂料和抗紫外稳定剂等多种重要用途,对这类化合物的研究也促进了现代化学键理论的开展。作者在[1]中报导了二茂铁烃、醚、醇、羧酸及我国科学工作者所合成的二茂铁甲基硫醚类、N-二茂铁甲基苯胺类、N-二茂铁甲基芳磺酰胺类[2]、酮类[3]以及酰胺类二茂铁衍生物的薄层色谱分析。在极性吸附剂硅胶上,用弱极性展开剂展开时,上述各类化合物,均分别呈现随着化合物极性逐渐增强及取代基数目增加,比移值依次递减的规律性。为确定这九类化合物的高速液相色谱分析条件及化合物结构与保留时间之间是否也遵循上述关系,本     

N-芳基二茂铁磺酰胺的合成及表征

为了制备具有生物活性的二茂铁衍生物,并和相应的苯系化合物比较,使二茂铁碘酰甩与芳香胺反应,合成了９个二茂铁磺酰胺,产率为５３．５％￣７９．１％,研究了芳香胺取代基对产率的影响。通过元素分析、红外光谱和＾１ＨＮＭＲ对产物进行了表征。     

1，3，2－二氮磷杂环戊烷衍生物的晶体与分子结构的研究

对含氮磷杂环类化合物的研究已有不少报导①②，很多氮磷杂环类化合物具有生物活性，标题化合物是一种新型的１，３，２－二氮磷杂环戊烷类化合物，并且有一定的除草活性，文献［１］已报导了其合成和除草活性的测定结果。为了进一步探讨环状的含磷氮杂环化合物的生物活性与其结构的关系，本文报导标题化合物的晶体结构。     

1—对甲苯磺酰基—3—吖丁啶基甲氧基甲基醚和1,5—二（对…

对甲苯磺酰胺二钠盐分别为１，３－二卤化合物和环氧氯丙烷反应，得到两个新的氮杂环化合物，给出可能的反应机理，用红外、核磁、质谱及晶体衍射确定它们的结构。     

1－对甲苯磺酰基－3－吖丁啶基甲氧基甲基醚和1，5－二（对甲苯磺酰基）－3，7－二羟基－1，5－二氮杂环辛烷的合成和结构

对甲苯磺酰胺二钠盐分别与１，３－二卤化合物和环氧氯丙烷反应，得到两个新的氮杂环化合物，给出可能的反应机理，用红外、核磁、质谱及晶体衍射确定它们的结构。     

四氮杂环蕃分子识别及红外光谱研究

目的合成四氮杂环蕃CP44并对二茂铁或氮杂环化合物进行分子识别,研究其红外吸收光谱。方法用高度稀释法合成了1,6,16,21-四氮杂[6．1．6．1]对环蕃CP44,在酸性条件下与具有生物活性的咪唑类或二茂铁氮进行反应,IR和MS对包结物的结构进行测定。结果得到7个主-客体包结物。结论由IR中N-H伸缩频率可以研究四氮杂环蕃与含氮杂环的分子识别行为。     

双二茂铁基酰胺化合物的合成与表征

以L-缬氨酸和二茂铁为原料,经过6步反应合成了双二茂铁基酰胺化合物8.一方面,以L-缬氨酸为原料,利用NaBH4将其还原为L-缬氨醇;另一方面,以二茂铁为原料,首先合成中间体二茂铁甲酸4,然后将4转化为二茂铁甲酰氯,后者直接与L-缬氨醇在Et3N存在下进行反应得到化合物6.将6转换为氯代产物7,化合物7不经分离直接与对甲苯磺酰胺的钠盐进行反应合成目标产物8,利用IR、NMR等结构表征,表明经该法成功合成了目标产物.     

二茂铁衍生物的氰乙基化反应(Ⅳ)二茂铁磺酰胺类、二茂铁吡唑类及二茂铁硫酚的氰乙基化反应

在本文中,我们报告了九种含氮含硫化合物的氰乙基化反应,它们是二茂铁磺酰胺类,二茂铁磺酰腓,3—二茂铁基吡唑类以及二茂铁硫醇。这些反应的产物都是新化合物。     

N-(1,4-二取代吡唑基)-1,2,3-噻二唑酰胺类化合物的抗植物病毒活性研究

[目的]吡唑和噻唑类化合物是一类具有广泛生物活性的化合物,为了寻找到高活性的杂环酰胺类化合物,对此类化合物做进一步研究.[方法]对已合成的16个N-(1,4-取代吡唑基)-1,2,3-噻二唑酰胺类化合物分别进了抗烟草花叶病毒(TMV)和黄瓜花叶病毒(CMV)生物活性测试.[结果]初步生物活性表明,部分目标化合物在500 μg/mL浓度下对烟草花叶病毒(TMV)和黄瓜花叶病毒(CMV)有一定的治疗活性,其中化合物TM-1在浓度为500 μg/mL时,对TMV和CMV的治疗抑制率分别为41.75％和41.25％;化合物TM-13在浓度为500 μg/mL时,对CMV的治疗抑制率分别为45.72％,比对照药剂宁南霉素58.72％略低,具有进一步研究的价值.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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