含O-(1,2,2,2-四氯)乙基-O-取代苯基硫逐磷酰胺酯的合成、结构表征和生物活性

以取代的苯氧基替代烷氧基，合成了２１种新的Ｏ－（１，２，２，２－四氯）乙基－Ｏ－取代苯基硫逐磷酰胺酯．通过元素分析、ＩＲ、１ＨＮＭＲ、３１ＰＮＭＲ和ＭＳ对化合物进行鉴定．Ｏ－（１，２，２，２－四氯）乙基硫逐磷酰肼在碱性条件下可容易地生成１，３，４，２－口恶二唑磷杂环戊烷．并确定了其质谱裂解机制．生物活性普筛结果表明，个别化合物具有高效防治根结线虫活性．     

甲基丙烯酸三丁基锡酯与甲基丙烯酸甲酯共聚合竞聚率的测定和计算

采用红外光谱分析共聚物组成的方法，测定了不同温度下甲基丙烯酸三了基锡酯（ＴｈＴＭ）和甲基丙烯酸甲酯（ＭＭＡ）在甲苯溶液中的自由基共聚合竞聚率．并用Ｆ—Ｒ法、Ｍ—Ｌ法和ＥＶＭ法处理了实验结果，讨论了不同的数据处理的方法对共聚合竞聚率数值的合理性和准确性的影响．随聚合温度的升高，ＴＢＴＭ和ＭＭＡ逐渐倾向于理想共聚合．由共聚温度与ｒ１和Ｒ２的关系得到各温度下最为合理的ｒ１和ｒ２值，并讨论了聚合温度对共聚活性的影响．     

苯甲酸（1H－1，2，4－三唑－1－基）－3，3－二甲基－2－丁酮酯衍生物的合成

用冠醚作催化剂，通过苯甲酸盐同１－溴代－１－（１Ｈ－１，２，４－三唑－１－基）－３．３－二甲基丁酮－２－反应，合成了一系列苯甲酸（１Ｈ－１，２，４－三唑－１－基）－３，３－二甲基－２－丁酮酯类新化合物，并对合成方法进行了探讨。通过ＩＲ、￣１ＨＮＭＲ及元素分析，确定了化合物的结构。     

生物可降解磷酸酯-碳酸酯共聚物的合成及性能研究

通过光气，二氯磷酸酯和双酚Ａ反应，合成六种磷酸酯 碳酸酯共聚物，用ＩＲ、１Ｈ ＮＭＲ及元素分析表征了共聚物，测量了Ｍｎ和热学性质．初步研究了在ｐＨ７４磷酸盐缓冲溶液中，核糖核酸酶或碱性磷酸酶存在下的体外降解性能及其对抗肿瘤药物５ Ｆｕ的释放性能．     

丙烯酸-β-羟乙酯和甲基丙烯酸正丁酯共聚合参数的测定与研究

用＾１Ｈ－ＮＭＲ分析法测定了丙烯酸－β－羟乙酯（Ｍ１）和甲基丙烯酸正丁酯（Ｍ２）的共聚物组成,用Ｍａｙｏ－Ｌｅｗｉｓ模型的误差变量法计算出不同温度下该体系的溶液聚合的竞聚率,分别为ｒ１＝０．６３,ｒ２＝１．１７（６０℃）;ｒ１＝０．６１,ｒ２＝１．０１（８０℃）;ｒ１＝０．６１,ｒ２＝０．９７（１００℃）;ｒ１＝０．７０,ｒ２＝１．０３（１２０℃）;ｒ１＝０．６８,ｒ２＝０．８８（１４０℃）和ｒ１＝０．６６,ｒ２＝０．８６（１６０℃）。根据Ａｒｒｈｅｎｉｕｓ方程计算获得了体系均聚、共聚反应频率因子之比Ａｉｉ／Ａｉｊ和活化能之差Ｅｉｉ－Ｅｉｊ,并讨论了溶剂、氢键对共聚合单体活性的影响。     

N＇，N＇－二－（2－氯乙基）－O－芳基－N~3－芳基硫脲基磷酰胺酯的合成、结构及性质研究

合成了１４种含有氮芥结构及芳基取代硫脲基的磷酰胺酯，其结构经１ＨＮＭＲ、ＩＲ、ＭＳ和元素分析证实。研究了它们的波谱性质及结构和化学位移的关系，讨论了磷原子上取代基对反应的影响．初步生测结果表明，部分化合物具有良好的抗ＴＭＶ病毒活性和良好的抗肿瘤活性．     

α－甲基丙烯酸烯丙酯的合成及其自由基、阴离子聚合的研究

合成了α－甲基丙烯酸烯丙酯（ＡＭＡ），并对其自由基、阴离子聚合进行了探讨。结果发现，该单体难以进行选择性自由基聚合，但可用作多种单体自由基聚合的交联剂。用１，１′－二苯基己基锂在ＴＨＦ中引发ＡＭＡ，可顺利地进行α位双键的选择性阴离子聚合，分子量实测值与计算值基本一致。在较低温度下（≤－６０℃），可得窄分布ＰＡＭＡ（Ｍｗ／Ｍｎ＝１．１２～１．１５）。随聚合温度升高，间同和无规聚合物含量分别呈下降和上升趋势。ＧＰＣ、１ＨＮＭＲ及ＦＴＩＲ鉴定表明，用阴离子聚合法可得到溶于多种溶剂、每个重复单元上均定量带有烯丙基双键的窄分布官能性ＰＡＭＡ。     

高折光指数光学树脂的合成——相转移法合成不饱和硫醇酯单体的条件控制

采用正常的低温相转移催化（ＰＴＣ）和反滴碱溶液ＰＴＣ法分别合成了含硫双烯ＭＥＳＤＭＡ和单烯ＭＥＰＳＭＡ．１Ｈ ＮＭＲ分析证明ＭＥＳ中的杂质主要是由原料ＴＤＧ引入的．对含单个巯基的ＭＥＰＳ的正常ＰＴＣ酯化接枝双键，因存在巯基和不饱和双键的加成反应而导致失败．作者最终得到了折光指数在１６２５以上的ＭＥＳＤＭＡ／ＭＥＰＳＭＡ共聚物．     

聚碳酸亚丙酯中环状碳酸酯的IR法测定

用ＩＲ光谱法测定聚碳亚丙酯样品中的环状小分子杂质碳酸亚丙酯。发现该杂质的质量分数与１／（Ａ１１８０／Ａ１２５０＋１）呈现线关系（Ａ１１８０和Ａ１２５０分别为波数１１８０ｃｍ＾－１和１２５０ｃｍ＾－１处的吸光度）；标准偏差为０．０１１；回归系数为０．９９９２。该法用以代替＾ＨＮＭＲ法，可以较简单地给出可靠结果，满足常规测试的要求。     

α-外式-7-氧双环[2.2.1]庚-5-烯-2,3-二甲酰亚氨基-α-取代苯基膦酸二苯酯的合成

以去甲 去氢斑 蝥素为原 料合 成了 α外式７氧双 环［２２１］ 庚５烯２ ，３二 甲酰 亚氨 基α取代苯 基膦酸二 苯酯共 ８ 种化合 物． 所 合成化合 物结构 经１ Ｈ Ｎ Ｍ Ｒ、３１ Ｐ Ｎ Ｍ Ｒ 、 Ｍ Ｓ、 Ｉ Ｒ 及 元素 分析所确证 ．     

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%.     

Synthesis of 1-benzyloxypyrazin-2(1H)-one derivatives

Different approaches for the synthesis of 1-benzyloxypyrazin-2(1H)-one derivatives from simple amino acids have been investigated. A library of 33 precursors for the preparation of N-hydroxy pyrazinones was obtained in moderate to good yields.     

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.     

A general and convenient synthesis of 4-(tosylmethyl)semicarbazones and their use in amidoalkylation of hydrogen,heteroatom, and carbon nucleophiles

A general synthesis of previously unknown semicarbazone-based α-amidoalkylating reagents, 4-(tosylmethyl)semicarbazones, has been developed. The synthesis involved three-component condensation of semicarbazones of aliphatic or aromatic aldehydes with the same or other aldehydes and p-toluenesulfinic acid. The scope and limitations of this reaction were investigated. The compounds obtained were demonstrated to be an efficient α-(4-semicarbazono)alkylating agents. They were reacted with H- (sodium borohydride), O- (sodium methylate), S- (sodium phenylthiolate), N- (pyrrolidine, sodium succinimide), P- (trialkyl phosphites), and C-nucleophiles (sodium diethyl malonate) to give the corresponding products of the tosyl group substitution, 4-substituted semicarbazones, including analogues of nitrofurazone. Among the prepared compounds tested in vitro for antibacterial and antifungal activity, three nitrofuryl-containing semicarbazones exhibited high biological activities with minimum inhibitory concentration (MIC) values of 8–32 μg/mL.     

Synthesis of novel chiral bidentate hydroxyalkyl-N-heterocyclic carbene ligands and their application in palladium-catalyzed Mizoroki–Heck couplings and asymmetric addition of diethylzinc to benzaldehyde

A small library of new chiral bidentate hydroxyalkyl-imidazolium salts 1 is conveniently synthesized on multi-gram scale from inexpensive and commercially available chiral pool amino acids. The corresponding carbenes, generated by deprotonation of imidazolium salts 1, in combination with palladium(II) chloride were tested in the Mizoroki–Heck coupling reaction. The most significant results in terms of yields and reactivities were achieved with low catalyst loading. The catalytic activities of these imidazolium salts were also investigated in the asymmetric addition of diethylzinc to benzaldehyde. The use of MgO nanoparticles as an additive in conjunction with these ligands played a crucial role in increasing the efficiency of these reactions.