弱极化区电极反应动力学分析

弱极化区电极反应动力学分析邱德瑜糜天英（中国科学院长春应用化学研究所长春１３００２２）盛桂云（长春工业高等专科学校长春１３００２１）关键词弱极化区非活化极化β′值的变化中图分类号６４６．５４在弱极化区，对于非活化控制的电极反应过程，βａ、βｃ是ΔＥ的...     

非水体系中磷酸锌的合成与表征

非水体系中磷酸锌的合成与表征宋天佑，徐家宁，徐如人，岳勇（吉林大学化学系，长春，１３００２３）（中国科学院武汉物理研究所）关键词无机合成，非水体系，磷酸锌，Ｘ射线衍射非水体系中合成磷酸铝的工作开展得较为广泛［１，２］，在水溶液中合成磷酸锌的工作亦有报...     

光固化聚酯丙烯酸氨基甲酸酯树脂的合成及其性质

光固化聚酯丙烯酸氨基甲酸酯树脂的合成及其性质黄景琴，田禾，孝延文，杨振华，陈文启（中国科学院长春应用化学研究所长春１３００２２）关键词　光固化树脂，齐聚物，丙烯酸氨基甲酸酯，合成为了降低污染和减少能耗，非溶剂型树脂被广泛地用作涂料、粘接剂、绝缘材料等...     

（TPP）Ni（Ⅱ）氧化反应的电化学和光谱电化学研究

（ＴＰＰ）Ｎｉ（Ⅱ）氧化反应的电化学和光谱电化学研究严川伟，王振新，林祥钦（中国科学院长春应用化学研究所电分析化学开放实验室，国家电化学和光谱研究分析中心长春１３００２２）关键词镍卟啉，阴离子配位，电化学，光谱电化学镍卟啉是一类重要的仿生模型化合物，...     

双电荷离子［C_（12）H_（12）N_2O］~（2＋）和［C_（12）H_（12

双电荷离子［Ｃ_（１２）Ｈ_（１２）Ｎ_２Ｏ］~（２＋）和［Ｃ_（１２）Ｈ_（１２）Ｎ_２Ｓ］~（２＋）的气相单分子分解反应研究任达，贾维平，李智立，刘淑莹（中国科学院长春应用化学研究所，长春，１３００２２）关键词双电荷离子，质量分析离子动能谱，串联质谱，４...     

丙烯酸接枝乙丙共聚物的结构

丙烯酸接枝乙丙共聚物的结构李丽霞，尹志辉，綦玉臣，殷敬华（中国科学院长春应用化学研究所高分子物理开放实验室长春１３００２２）关键词ＥＰＭ，ＥＰＭ－ｇ－ＰＡＡ，异相成核剂，结晶温度聚烯烃是目前应用最为广泛的塑料之一，但由于它的非极性限制了它与金属和其它...     

不同分子量尼龙1010的结晶与熔融

不同分子量尼龙１０１０的结晶与熔融＊朱诚身王经武王友文杨桂萍（郑州大学材料工程系郑州４５００５２）陈玉莫志深（东北师范大学分析测试中心长春１３００２４）（中国科学院长春应用化学研究所长春１３００２２）关键词尼龙１０１０，分子量，结晶，熔融＊１９９４＿...     

丙烯酸丁酯－苯乙烯－丙烯腈共聚物的结构与力学性能

丙烯酸丁酯－苯乙烯－丙烯腈共聚物的结构与力学性能张会轩，韩业，张会良，冯之榴（吉林工学院化工系长春１３００１２）（中国科学院长春应用化学研究所长春）关键词ＡＳＡ，乳液聚合，粒子，力学性能丙烯酸丁酯－苯乙烯－丙烯腈共聚物（ＡＳＡ）是两相结构，聚丙烯酸丁...     

有机锡化合物的光电子能谱（XPS）研究（Ⅰ）

有机锡化合物的光电子能谱（ＸＰＳ）研究（Ⅰ）李兴林，张瑞峰（中国科学院长春应用化学研究所，长春１３００２２）傅芳信，李洪玉，朱东升（东北师范大学化学系，长春１３００２４）有机锡化合物的合成和结构研究，特别是在生物活性和催化性能方面日益增多［１～３］。...     

聚(ε-己内酯)/聚(d,l-丙交酯)共混物膜在酶促降解过程中的形态变化

聚（ε┐己内酯）／聚（ｄ，ｌ┐丙交酯）共混物膜在酶促降解过程中的形态变化张杰甘志华＊梁奇志景遐斌（吉林工业大学理学院应用化学系长春）（中国科学院长春应用化学研究所长春１３００２２）关键词聚己酸内酯－聚丙交酯共混物，酶促降解，形态１９９７－１０－３０收...     

二氧化碳和丙烯直接合成甲基丙烯酸的NiPMo/TiO2催化剂的研究

用溶胶-凝胶法以磷钼酸(MPA)的镍盐溶液水解钛酸四丁酯制备了NiPMo/TiO2催化剂.使用ICP、 XRD、 TG-DTA、 IR、 TPD-MS和微反应技术研究了催化剂的化学组成、热稳定性、化学吸附性质和催化反应性能.杂多钼酸盐与TiO2通过O2-在TiO2表面发生了键合.在623 K下,杂多阴离子仍保持原有的Keggin结构.CO2在Lewis酸位Ni(Ⅱ)和Lewis碱位Ni-O-Mo的桥氧协同作用下生成CO2卧式吸附态Ni(Ⅱ)←O-(CO)←(O--Ni).丙烯有多种吸附态在催化剂上吸附.在563 K、 1 MPa和空速1500 h-1的反应条件下,丙烯的摩尔转化率为3.2%,产物MAA选择性为95%.     

Toward new camptothecins. Part 6: Synthesis of crucial ketones and their use in Friedländer reaction

In the context of the preparation of camptothecin and luotonin A analogs, the synthesis of some key keto-precursors and their use in Friedländer condensation are described. This paper also focuses on the stability of these keto intermediates and emphasizes the major differences between indolizinones and pyrroloquinazolinones series. Noteworthy is also the report of some original structures isolated as by-products of some experiments.     

CoFe2O4自形成磁性液体场致结构化对磁化的影响

The Langevin paramagnetic theory can’t describe the relation between magnetization of ferrofluids and applied magnetic field. The structuralization of ferrofluids, which is considered the main influence factor of the magnetization, is regarded. The part of magnetization works is deposited when the structure is forming. This action influences the magnetization of ferrofluids directly or indirectly. On the base of the “compressing” model, the Langevin function that usually describes the magnetization of ferrofluid is modified, and a well-fitted curve is obtained. An equation of the relation between the equivalent volume fraction after being “compressed” and the intensity of magnetic field is discovered, which approximately describes the process of magnetization. The relation between the approximate initial susceptibility and the volume fraction can be obtained from modified formula.     

Highly regioselective Buchwald–Hartwig amination at C-2 of 2,4-dichloropyridine enabling a novel approach to 2,4-bisanilinopyridine (BAPyd) libraries

The highly regioselective Buchwald–Hartwig amination at C-2 of the cheap and readily accessible reagent, 2,4-dichloropyridine with a range of anilines and heterocyclic amines is described. This new methodology is robust and provides a facile access to 4-chloro-N-phenylpyridin-2-amines on 0.25 mol scale. These intermediates undergo a further Buchwald–Hartwig amination at higher temperature to enable rapid exploration of the chemical space at C-4 and to provide a library of 2,4-bisaminopyridines.     

KMnO4-mediated oxidative CN bond cleavage of tertiary amines: Synthesis of amides and sulfonamides

KMnO₄-mediated oxidative CN bond cleavage of tertiary amines producing secondary amine was introduced, which was trapped by electrophiles (acyl chloride and sulfonyl chloride) to form amides and sulfonamides. The reaction could take place at mild condition, tolerating a wide range of function groups and affording products in moderate to excellent yields.     

Chemistry of heterocyclic compounds at the A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, over 50 years (Review)

The review contains a concise historical account and information on the most significant researches undertaken by the staff at the A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences on the Chemistry of Heterocyclic Compounds. Dedicated to Academician of the Russian Academy of Sciences B. A. Trofimov on his 70th jubilee. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1443–1502, October, 2008.     

Sulfur-directed metal-free and regiospecific methyl C(sp3)–H imidation of thioanisoles

Regiospecific and direct imidation of the methyl C(sp³)–H bond of thioanisoles is realized under mild and metal-free conditions with N-fluorobis(benzenesulfonyl)imide as an oxidant and nitrogen source. Proposed mechanism suggests that thionium ion intermediates and a Pummerer-type reaction are involved. The imidation has advantages such as high step-economy, excellent functionality tolerance, and regiospecificity, giving structurally diverse imidation products.     

Selective syntheses of 2H-1,3-oxazines and 1H-pyrrol-3(2H)-ones via temperature-dependent Rh(II)-carbenoid-mediated 2H-azirine-ring expansion

The Rh(II)-catalyzed reaction of 2-carbonyl-substituted 2H-azirines with ethyl 2-cyano-2-diazoacetate or 2-diazo-3,3,3-trifluoropropionate provides an easy access to 2H-1,3-oxazines and 1H-pyrrol-3(2H)-ones. These compounds can be selectively prepared from the same starting material using temperature as the only varied parameter. The 2-azabuta-1,3-diene intermediate, a common precursor for both heterocyclic products, isomerizes into 2H-1,3-oxazine under kinetic control, while 1H-pyrrol-3(2H)-one is the sole product of the reaction at elevated temperatures. According to DFT-calculations a one-atom oxazine ring contraction involving ring-opening to a 2-azabuta-1,3-diene intermediate, followed by a 1,5- and 1,2-prototropic shift leads to the consecutive formation of imidoylketene and azomethine ylide, which then further undergo cyclization to the pyrrole derivative.     

Copper catalyzed/mediated synthetic methodology for ebselen and related isoselenazolones

Scope of the copper catalyzed/mediated selenium-nitrogen coupling reaction has been studied for the synthesis of isoselenazolones. It is noticed that the 2-chloro, 2-bromo-, and 2-iodo-aryl amides substrates can be exploited in the selenium-nitrogen coupling reaction by employing 25-100 mol % of CuI/1,10-phenanthroline (L) and potassium carbonate as a base in DMF. Furthermore, electron rich 2-chloro-arylamides also underwent selenium-nitrogen coupling reaction to give biologically important selenium-nitrogen heterocycles. Also, copper-catalyzed selenium-nitrogen coupling reaction has been meticulously applied for the synthesis of diaryl diselenides having methoxy, amine, and amide functionality from respective aryl iodides in the presence of stoichiometric amount of succinimide as an external Se-N coupling partner.