The chapter two was focused on the samarium diiodide promoted organic reactions and their applications in organic synthesis, firstly, a new synthesis of highly substituted cyclopentadienes from a,β-alkynone promoted by samarium diiodide was investigated and the highly substituted cyclopentadienes were prepared in moderate to good yields under mild conditions. Secondly, the Michael addition and Michael-aldol tandem reaction of diorganyl diselenides or diorganyl disulfides with α,β-alkynones mediated by samarium diiodide were studied and a series of alkenylsulfides and alkenylselenides were prepared in good yields. Then the highly regioselecfive nucleophilic addition of the allylsamarium bromide to α,β-alkynones were explored. We found that the allylsamarium bromide reacts with α,β-alkynones to afford regiospecificly 1. 2-nucleophilic addition products in good yields under mild condition. At last we studied the coupling reaction of aryl halides promoted by NiCl〓/PPh〓/Sm〓.

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According to the structure and synthesis character of the geminal dinitro energetic plasticizers,the current situation about the synthesis,the property and application of geminal dinitro aldehyde acetals,esters and ether energetic plasticizers is summarized with 21 references.

從偕二硝基含能增塑劑的結(jié)構(gòu)和合成特點(diǎn)出發(fā)欧美性交农夫导航，綜述了偕二硝基縮醛類(lèi)、酯類(lèi)及醚類(lèi)等含能增塑劑的合成你懂的小电影、性能及應(yīng)用研究現(xiàn)狀。

In the forth part of the dissertation, based on the mechanism of classical Strecker reaction,we developeda new method for the asymmetric synthesis of the α,α-disubstituted amino acid, and applied it to theasymmetric synthesis of-αM4CPG, compound 11a and 11b.

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Based on predecessors research findings, the quality of different kinds of research techniques are compared and induced. Concerned with using graph to type and scale synthesis, topological graph based upon functional fractionation is presented, the combination, evolution and inversion regularities of epicyclic gear trains are researched in detail. The synthesis problems of general and overlapping EGTs are solved. The method may be applied into the innovation design of EGTs.

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Using ethyne as source gas, CNTs were successfully synthesized by CVD method. By comparing different synthesis technics, the influences of parameter to the grow of CNTs, such as catalysts, growth time, reaction temperature and ratio of all kinds of carrier gases were investigated. The results showed that the influence of carrier gas, reaction temperature, and the growth time on synthesis of CNTs was significant. In conclusion, a better condition for carbon nanotube growth was obtained. Through analyzing Raman Spectrum of samples, GM and SWNTs' characteristic peak-RBM was indicated.

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The protein synthesis of Ceteuisiae fermentum cell was inhibited by NCS when they were cultured in the medium with ~(35)S-Met.3. The Ceteuisiae fermentum cells treated with NCS were mostly in G1 stage during the cell cycle measurement. The amount of cells in Gl stage increased about 20% compared to the control. These data suggested that the process of protein synthesis may be inhibited or prolonged by NCS.

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Rare earth organometallic chemistry is closely interrelated with materials science, organic synthesis, life science. Rare earth organometallic complexes containing Ln-C σ bond and involving silylene-bridged fluorenyl are of important significance in macromolecular and asymmetry organic synthesis.

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These compounds are of substantial interest both inviewpoints of theory and practical applications, mainlyunder the stimulus to achieve synthetic models either foractive sites of iron-sulfur proteins or for transitionmetal catalysts. This thesis describes the synthesis, structures andconformations of 51 new iron-sulfur cluster complexes,which have been characterized by elemental analysis andstandard spectroscopic methods. In addition, single-crystalX-ray diffraction analyses were performed for 4 representa-tive new compounds. Reactivities of μ-〓 with mono- and di- Grig-nard reagents derived intermediates toward various organicelectrophilic substrates were studied, along with complexa-tion of arynyl-containing iron-sulfur clusters by 〓Thus, several bridged, non-bridged, monomeric, dimeric,homonuclear, heteronuclear iron-sullfur and iron-sulfur co-balt-carbon cluster complexes were synthesized. A novelreaction and convenient route for the synthesis in highyield of tetranuclear iron complexes 〓 containing atetracoordinated sulfur atom was discovered, whereas aplausible mechanism based on experimental results was propo-sed for the formation of the new cluster type.

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Immunohistochemistry technology was used to evaluated tyrosine hydroxylase of DA synthesis. DA, 5-hydroxytryptophan(5-HT) and their respective metabolic products 3,4 -dihydroxyphenylacetic, homovanillic are also precisely quantified in this research by using high-pressure liquid chromatography with electrochemical detector. The main metabolism monoamine oxidase of DA was processed too. RESULTS:WD can increase the synthesis and the metabolism process of DA .

本文觀察了溫膽湯及其配伍對(duì)大鼠刻板行為的影響，采用了免疫組化技術(shù)對(duì)多巴胺的合成酶—酪氨酸羥化酶進(jìn)行了含量測(cè)定视频高清国产在线观看网站下载安装，應(yīng)用高效液相-電化學(xué)法測(cè)定了DA夜夜大片网、5-羥色胺（5-HT）及代謝產(chǎn)物3，4—二羥基苯乙酸欧美AA视频网站、高香草酸的含量欧美国精品亚洲精品日韩专区，并測(cè)定了DA主要降解酶—單胺氧化酶。

The synthesis of chiral pharmaceuticals is a hot issue of the development in pharmaceutical in the world,asymmetric hydrogenization of which is the successful technology in the chiral synthesis .

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