碳环的

Ethylene Oxide and Carbon Dioxide Mixture, with more than 9

环氧 烷和氧化碳的混合物，环氧烷含量超过9%，但不超过87% 1041

Ethylene Oxide and Carbon Dioxide Mixture, with more than

氧化碳和环氧烷的混合物，含环氧烷超过9%，但不超过

The Diels-Alder cycloadditions of [60] fullerene for preparation of optical limitingmaterials are discussed in chapter 3 and 6. Soluble cycloaddition derivatives of 〓aresynthesized by the reaction of 〓 with indene,1,1'-biindene andcyclopentadiene derivatives.〓Particular, the Diels-Alder cycloaddition of 〓 with1,1'-biindene under controlled conditions affords the stable monoadduct 〓〓of novel structure, which was confirmed by HPLC, FTIR, FD-MS,〓NMR,〓 NMR, HMQC and HMBC spectra, Its two bridgehead cage carbons resonate at70.91ppm, The 〓 NMR spectra showed 38 lines consistent with the 〓 symmetryassociated with [6,6] addition. The 〓 shows similar optical limitingproperties to that of 〓 in toluene for 8ns laser at wave length 532nm. Moreover, thehigh solubility of this adduct in polar solvents such as THF, acetone enables itsincorporation into sol-gel glass matrix. The thin films prepared via the sol-gel methodshow improved OL behaviour compared to those of 〓. The langmuir-Blodgett filmformation and uv-visible absorption of 〓 are also investigated. LBmonolayer of this compound is prepared on the air-water interface at 〓 mol/l. In chapter 4, three water-soluble derivatives of [60] fullerene: fullerol(1), theaddition product (2)of fullerol (1)with polyvinylpyrrolidone and fumaric acidderivative of 〓(3) are synthesized and characterized.

通过Diels-Alder环加成反应，用茚〓和1，1'-联茚〓及取代茂合成了一系列可溶性的〓环加成衍生物，发现可控制反应条件，使1，1'-联茚与〓反应，并高产率地得到具有新颖结构的单加成物，用HPLC、FTIR、FD-MS 及〓、HMQC、HMBC等多种波谱技术对其结构进行表征，测得它的两个〓杂化的桥头碳的化学位移为〓ppm，证明生成的衍生物为6∶6闭式环加成，〓NMR谱中共给出38个信号，表明〓联茚衍生物分子具有〓对称性；在波长532nm，脉冲宽度8ns的激光下，〓联茚衍生物的甲苯溶液的光限幅性能与〓的甲苯溶液相近，由于〓联茚单加成衍生物熱稳定性好，在四氢呋喃，丙酮等极性溶剂中溶解性好，能分别均匀地掺入溶胶-凝胶中，已发现它的溶胶(so1)光限幅性能优于纯〓的光限幅性能；使用Langmuir-Blodgett技术将〓联茚衍生物在空气和水的界面进行了LB单层膜和多层膜实验以及UV-Vis吸收谱研究，通过等温压缩曲线测试，证明浓度为〓〓时，〓联茚衍生物能够形成单层膜。

The structures of 6 main products of ozonization of nopol were identified by GC-MS, and they are all four-ring compounds , the result suggests that the double bond, tertiary hydrogen can be oxidized, and there was other further oxidation.

通过GC-MS分析确定了6个诺卜醇臭氧化主要产物的结构，它们均为四元环类化合物，这表明诺卜醇臭氧化时碳碳双键、叔氢都会被氧化，还伴有其它更深层次的反应。

The results showed:1The 6 main products are all fourmemberring compounds produced through the cleavage of double bond of nopol;2Accompany with oxidations of the double bond and tertiary hydrogen in the ozonization,there are other reactions at more indepth levels.

分析结果表明：这6个主要产物都是诺卜醇分子中双键断裂后所形成的四元环类化合物，诺卜醇臭氧化时除了碳碳双键、叔氢被氧化外，还伴有其它更深层次的反应。

It was found that the endo-type sulfonium salts were also worked but afforded the corresponding cyclopropanes with opposite absolute configuration compared with that from the exo-type salt.

考察了硫盐结构对反应的影响，当硫盐中碳-硫键位于樟脑骨架 endo 位置和碳-硫键位于 exo 位置时所得环丙烷化反应主产物的绝对构型相反。

A Theoretical Study on the Reaction Mechanism of Epoxidation Reaction of the 4- Bicyclo

CEPS 思博网--文章书目；-1页数：7 需求点数：28 电子全文：请登入。篇名（4-溴甲基双环[4.4.1]-1，3，5，7，9-十一碳五烯基－3-）甲醇环氧化反应机理的理论研究

The yield of neutral oil stocks (300℃~500℃) is 42.33%, the latent content of lube is about 90%, and they have the characteristics of low residue carbon, low sulfur content, light-colored, low acid number and less total and aromatic ring numbers.

中性油原料收率为42.33%，其中润滑油潜含量均在90%左右，且残炭值及硫含量不高，颜色浅、酸值小，结构族组成中总环数与芳香环数较小；光亮油原料收率为16.38%，其凝点较高，粘度较小，结构族组成中的烷基碳率较高。

Ethylene Oxide and Dichlorodifluoromethane Mixture, with not

环氧 烷和氧化碳的混合物，环氧烷含量超过9%，但不超过87% 1041

Diels-Alder reaction has been one of the cornerstone reactions in organicchemistry for the construction of six-membered rings and the formation ofcarbon-carbon binds.

Diels-Alder 反应是有机化学中建构六员环和碳碳键生成最为重要的反应之一。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。