β-芳甲酰丙酸的环合及同四氢噻唑-2-硫酮的反应

由β-芳甲酰丙酸(1a～e)在乙烯酮存在下合成了5-芳基-2(3H)呋喃酮(2a～e),β-芳甲酰丙酸(1a～c)与四氢噻唑-2-硫酮在碘代-1-甲基-2-氯吡啶盐及三乙胺存在下反应合成N-芳甲酰丙酰基四氢噻唑-2-硫酮(3a～c)。     

酰硫基苯并噻唑与丁酮酸乙酯、丙二酸二乙酯及戊二酮的反应

芳甲酰硫基苯并噻唑l_(a～d)分别与丁酮酸乙酯2_a、丙二酸二乙酯2_b及戊二酮2_c反应得到α-芳甲酰基-β-丁酮酸乙酯3(a～d)芳甲酰基丙二酸二乙酯3(e～h)及3-苯甲酰基-2,4-戊二酮3_i。     

微波辐射下β-芳氧丙酸和色满酮的合成

在微波辐射下以取代苯酚和β-氯丙酸为原料,碱性条件下以少量水作溶剂高效率地合成了β-芳氧丙酸,继而在微波辐射及多聚磷酸(PPA)作用下,将芳氧丙酸脱水环合制得系列色满酮,产率较高,反应时间大大缩短.     

β-羟乙基肼及其衍生物的合成

本文研究β-羟乙基肼的试制条件,找出在较低温度条件下,用大量过剩的40%或50%的肼水与环氧乙烷加成得β-羟乙基胼,收率达60—64%.苯甲酰氯,对氯苯甲酰氯对溴苯甲酰氯同β-羟乙基胼反应,分别得芳酸-β-(N,N′一二酰肼基)乙酯(Ⅰ)、(Ⅱ)、(Ⅲ)、对硝基苯甲酰氯同β-羟乙基肼反应得 N,N′一二对硝基苯甲酰肼基乙醇(Ⅳ)(?)它们的结构分别通过元素分析,冰点降低法测定分子量及红外光谱等方法确定。经生物实验表明:β-羟乙基肼对蚕豆、碗豆以及棉花的开花期有促进作用。至于(Ⅰ)、(Ⅱ)、(Ⅲ)、(Ⅳ)等新化合物的生物实验尚待进一步研究。     

5-芳氧亚甲基-2-邻氯苯甲酰胺基-1,3,4-噻二唑的合成

冰醋酸催化下,首次完成了1-芳氧乙酰基-4-(邻氯苯甲酰基)氨基硫脲环化为5-芳氧亚甲基-2-邻氯苯甲酰胺基-1,3,4-噻二唑的合成．用元素分析、IR及1HNMR确证了其结构．     

酰氨基硫脲及其相关杂环化合物的研究(33) 5-(4′-吡啶基)-2-芳酰氨基 -1,3,4-噻二唑的合成

以1-吡啶甲酰基-4-芳酰基氨基硫脲Ha-j为前体,利用浓硫酸脱水合成了5-(4′-吡啶基)-2-芳酰氨基-1,3,4-噻二唑Ia-j共10个化合物.所有化合物的结构经元素分析和光谱数据确认,并测定了2个代表化合物的生物活性,得到了较为满意的结果.     

酰氨基硫脲及其相关杂环化合物的研究(33)5-(4'-吡啶基)-2-芳酰氨基-1,3,4-噻二唑的合成

以1-吡啶甲酰基-4-芳酰基氨基硫脲Ha-j为前体, 利用浓硫酸脱水合成了5-(4'-吡啶基)-2-芳酰氨基-1,3,4-噻二唑Ia-j共10个化合物.所有化合物的结构经元素分析和光谱数据确认, 并测定了2个代表化合物的生物活性, 得到了较为满意的结果.     

1-(5-甲基异(口恶)唑-3-甲酰基)-4-芳酰基氨基硫脲的合成

通过5-甲基异(口恶)唑-3-甲酰肼Ⅰ与取代苯甲酰异硫氰酸酯在乙腈溶剂中发生亲核加成反应,制得了9个新的1-(5-甲基异(口恶)唑-3-甲酰基)-4-芳酰基氨基硫脲Ⅱ.Ⅱ经元素分析,IR,~1H-NMR和MS分析确定其结构.     

N,N—双—（苯并三（或咪）唑基甲基）羟胺与芳香酮的交换反应

在碳酸氢钠催化条件下，用一步法以苯并三唑，甲醛，盐酸羟胺为原料，合成了Ｎ，Ｎ－双－（苯并三唑基甲基）羟胺（Ａ），（Ａ）或Ｎ，Ｎ－双－（苯并咪唑基甲基）羟胺（Ｂ）与苯乙酮，对位取代苯乙酮在氯化氢无乙醇溶液中发生酮交换发生，得到５个Ｎ，Ｎ－双（β－芳甲酰基乙基）羟胺（Ｃ），（Ｃ）与盐酸羟胺在醋酸钠溶液中反应，得到了Ｎ，Ｎ－双－（β－芳甲酰基乙基）羟胺双肟（Ｄ），（Ｄ）在五氯化磷苯溶液中发生Ｂｅｃｋｍａ     

固-液相转移催化法合成N-芳基-N′-(α-萘甲酰基)硫脲和芳撑-二(α-萘甲酰基)硫脲衍生物

在固 液相转移催化下 ,以PEG 4 0 0为催化剂 ,通过α 萘甲酰氯与硫氰酸铵以及芳胺和芳二胺反应 ,合成了一系列N 芳基 N′ (α 萘甲酰基 )硫脲和芳撑 二 (α 萘甲酰基 )硫脲衍生物     

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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