甲基丙烷

Biological activity of the compounds were studied and the result indicated that the compound 1,1'-ethyl dicarboxylate gem-dimethyl-cyclopropanediacylhydrazine has good activity against bean aphidsin at 250mg/L.

生物活性测定结果表明，在250mg/L的浓度下，化合物1，1'-二羧酸乙酯偕二甲基环丙烷双酰肼对蚕豆蚜虫有较好杀虫活性。

Chapter 1: The reactions of methylenecyclopropanes with phenylsulfenyl chloride or phenylselenyl chloride give cyclobutene derivatives along with ring-opened products in good total yields at 0 °C in various solvents. The reactions of methylenecyclopropanes with diphenyl diselenide give the di-phenylselenyl substituted ring-opening products which can be transformed to 2,5-dihydrofuran derivatives under the oxidation with hydrogen peroxide at room temperature.

在第一章中，我们发现亚甲基环丙烷类化合物在0℃时即可很快与苯硫氯或苯硒氯发生反应生成取代环丁烯类化合物和正常的开环产物；而与二苯基二硒的反应则需加热到150℃以上才能进行反应，生成的二苯硒基开环产物在双氧水氧化下可以转化为取代二氢呋喃类化合物。

In gas phase, there are two reaction paths, the concerted and stepwise mechanisms, both of which produce the experimental product, hydroxamic acid; the stepwise mechanism is predominant.

在气相中均找到两条反应通道，即协同机理和分步机理，均生成实验产物氧肟酸，而且分步机理均为优势通道；除2-甲基-2-亚硝基丙烷的反应没有协同途径外，在溶剂中反应机理与气相中的类似。

Among the six polyetherimdes, ODPA-IPDA with the largest free-volume and larger intrasegmental mobility has the highest permeability and the lowest permselectivity, ODPA-DABP with the smallest free- volume and the smallest intrasegmental mobility has the lowest permeability and the lowest permselectivity, ODPA-DMMDA with the larger free-volume and smaller intrasegmental mobility has higher permeability and higher permselectivity.

二苯醚四酸二酐（ODPA－4.4＇－二J氨基二苯异丙烷具有很大的自由体积和较小的链段活动性、很大的透气性和较小的透气选择性，ODPA—4，4'－二氨基二苯酮具有很小的自由体积和较小的链段活动性、很小的透气性和较大的透气选择性，ODPA—3，3'－二甲基二苯甲烷二胶具有较大的自由体积和较小的链段活动性、很大的透气性和很大的透气选择性。

The main objective of this research project is to modify the Methyl-Acetylene/propadiene selective hydrogenation reaction system of the No.3 Naphtha Cracker in CPC. The original gas phase reaction system was redesigned to a liquid phase reaction so that higher propylene selectivity was achieved and lower rates of propane and green oil were produced. To recover effectively the higher production of valuable propylene from the reaction system, the following fractionator was also redesigned.

本研究之目的在於修改中油公司三轻工场老旧的甲基乙炔／丙二烯选择性氢化气相反应系统，使成为液相反应系统，藉由液相反应的优异性，提高由MAPD氢化得到丙烯之选择率，同时降低丙烷及绿油产率，以增加丙烯产率，另亦修改丙烯精馏系统，以提升蒸馏塔提纯之效率。

To economize cost of S03H-functionalized ionic liquids,extend their range of application in chemistry reaction,fifteen of ionic liquids have been synthesized by using methylimidazole,tri-alkylamine,pyridine with industrial materials 1,4-butane-sultone and 1,3-propane sultone as source in this paper.The ionic liquids were synthesized by tri-alkylamine have not been reported and yields are higher than 98%.

为了降低SO_3H-功能化离子液体的成本，使其应用范围更加广泛，本论文利用N-甲基咪唑、三烷基胺、吡啶和廉价工业级原料1，3-丙烷磺内酯、1，4-丁烷磺内酯为原料来源，合成十五种SO_3H-功能化离子液体，三甲胺为原料合成的SO_3H-功能化离子液体还未见文献报道，收率大于98%。

Thestercoselectivity of the reaction of propargylide was different completely from that of the reactionof telluronium 3-trimethylsilylalltide with α,β-unsaturaled ketones and trans-trimethysilylacetylenyl-l-benzoyleyelopropane derivatives were obtained.

发现这一反应的立体化学与同样条件下含硅烯丙基碲叶立德和α，β-不饱和酮反应的立体化学完全不同，得到的是又式-2-三甲基硅基乙炔基-1-酮基环丙烷衍生物。

Part Ⅱ: The evelopropanation reactions of both semi-stabilized telluronium and arsoniumylides with α,β--unsaturated ketones proceed smoothly.

第二部分：烯丙基、巴豆基、三甲基硅基烯丙基、肉桂基、苄基碲、胂两种叶立德与α，β-不饱和酮均可以成功地进行环丙烷化反应，并且表现出不同的立体选择性。

A series of UV curable waterborne hyperbranched polyester s with different acid/amine terminal rate,which contained -OH?-COOH and methacrylic chain end groups,and were partly neutralized with thertiary amine,were synthesized from trimellitic anhydride,epichlorohydrin,glycidyl methacrylate and triethylamine.

以偏苯三酸酐、环氧氯丙烷、甲基丙烯酸缩水甘油酯、三乙胺合成了末端羧基与氨基不同比例的一系列可UV固化的高支化聚酯，研究了末端官能团对合成产物水溶性、粘度以及凝胶转化率的影响。

Including high temperature for the pyrolysis of natural gas to produce carbon black and acetylene; steam reforming of natural gas or partial oxidation of natural gas, synthetic gas can be obtained; natural gas through chlorination, sulfide, nitrification, ammoniated oxide, oxidation can be obtained A N all kinds of derivatives; in the wet gas ethane, propane, butane and natural gas liquid condensate, and so on, the steam cracker or pyrolysis to produce ethylene, propylene and butadiene; dehydrogenation of butane oxidation or produce small Diene or acetic acid, methyl ethyl ketone, and maleic anhydride, and so on.

包括在高温下进行的天然气热裂解，主要生产乙炔和炭黑；天然气蒸汽转化或天然气的部分氧化，可制得合成气；天然气经过氯化、硫化、硝化、氨化氧化、氧化可制得甲烷的各种衍生物；湿性天然气中的乙烷、丙烷、丁烷和天然气凝析液等，经蒸汽裂解或热裂解可生产乙烯、丙烯和丁二烯；丁烷脱氢或氧化可生产丁二烯或醋酸、甲基乙基酮、顺丁烯二酸酐等。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。