亚磷酸酯与醛酮化合物的反应

报导了由亚磷酸酯与醛酮化合物反应合成α－羟基膦酸酯的反应条件及其对反应的影响，分析了反应的过程并指明了亚磷酸酯的这类反应中作为亲停工剂其亲核性的特殊性。     

环磷酰胺酯的合成研究

环磷酰胺酯类化合物是一类对癌症疗效显著的化合物。其药效往往与其立体结构密切相关。文中采用新的合成方法，利用２，２，４－三甲基－１，３－戊二醇与三氯化磷反应得到环状二烷基亚磷酸酯，然后再利用此亚磷酸酯与一些胺类、氨基酸酯类化合物反应，合成了一系列未见报道的含磷杂环环磷酰胺酯类化合物，并利用红外、核磁、质谱等分析手段对其结构进行了鉴定。结果表明，该方法具有较高的立体选择性，且实验条件温和，操作简单，中间产物环状二烷基亚磷酸酯不用分离纯化，是一种较为理想的合成反式环磷酰胺酯的方法。产物的生物活性正在测试中。     

硫代亚磷酸酯的固液相转换催化磷—烷基化疗法

在四西基溴化铵，碳酸钾存在下，卤代烷对二烷基硫代亚磷酸酯进行磷－烷基化反应合成硫代烷基膦酸二烷基酯的新方法。     

手性亚磷酸酯一膦配体的合成、与铑（Ⅰ）的配位性能及催化反应研究

合成了具有立体和电子不对称结构的手性亚磷酸酯-膦配体，使用，^31P NMR和红外吸收光谱考察了其与金属铑（Ⅰ）离子的配位性能，并研究了得到的配合物对烯烃氢甲酰化反应的催化性能。获得了好的催化活性和区域选择性，但反应的对映选择性很低。     

取代杂氮硅三环化合物的合成及其反应研究

通过取代三烷氧基硅烷与三乙醇胺的酯交换反应合成了４个１－取代杂氮硅三环，以氯丙基杂氮硅三环与亚磷酸酯进行Ａｒｂｕｚｏｖ反应得到２个含磷酰基的杂氮硅三环。氨丙基杂氮硅三环与芳醛的缩合反应得到４个含芳亚甲氨基丙基的杂氮硅三环化合物，对所合成化合物的结构进行了表征，并对反应条件作了初步探讨。     

六氯磷腈催化亚磷酸二乙酯与异丙醇的酯交换反应研究

在适当的反应条件下,六氯磷腈可高选择性地催化亚磷酸酯与醇进行酯交换反应,并基于该酯交换反应的气氛条件、温度、浓度、溶剂、水的添加量以及催化剂的用量等因素进行了优化,摸索出该反应的最佳反应条件.     

N-磷酰酪氨酸的合成及二烷基亚磷酸酯与酪氨酸反应性研究

通过改进了的催化剂、碱含量及溶剂体系等条件,合成了N-磷酰酪氨酸,并在所拟定的实验条件下研究了常用的几种二烷基亚磷酸酯对酪氨酸的反应性。     

手性亚磷酸酯-膦配体的合成、与铑(Ⅰ)的配位性能及催化反应研究

合成了具有立体和电子不对称结构的手性亚磷酸酯-膦配体,使用31P NMR和红外吸收光谱考察了其与金属铑(Ⅰ)离子的配位性能,并研究了得到的配合物对烯烃氢甲酰化反应的催化性能。获得了好的催化活性和区域选择性,但反应的对映选择性很低。     

巧解金属与酸反应的应用题

活泼金属与酸发生置换反应，产生氢气的质量，不仅与参加反应的金属质量有关，而且与金属的化合价有关。比较参加反应金属的质量，或生成氢气的质量。一般方法是：写出反应的化学方程式，代人有关的数据进行计算，然后再将结果进行比较，得出结论。这种方法比较繁琐且费时，如果用下面规律解答则可化繁为简节省时间。[第一段]     

末端炔烃与亚铜离子反应的实验研究

研究了乙炔亚铜的电子吸收光谱，探讨了末端炔烃和亚酮离子的反应条件，生成物的稳定性和炔亚铜的组成，研究结果表明，末端炔烃的活泼性与介质中氨的含量密切相关，在ｃ（ＮＨ３．Ｈ２Ｏ）／ｃ（Ｃｕ＾＋）摩尔比为２７０～９００的范围内，反应活性最大，易与亚铜离子反应生成炔亚铅，红色乙炔亚铜的组成为ＣｕＣ≡ＣＣｕ，它在含有羟胺的氨性介质中很稳定，不受空气中氧的影响，这些结构为利用生成炔亚铜的以应来鉴定混合气中微笑     

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.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

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     

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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