合接

In order to develop an useful synthestic process, we have synthesized amides with various substitutents. The isoquinoline skeleton was constructed through Bischler-Napieralski reaction, followed by asymmetric reduction of the imine intermediates with a Ru complex to form the only chiral center. Finally, we connected the two phenyl groups by Heck reaction and effectively obtained optically active aporphine alkaloids.

为了发展一套实用的合成方法，我们首先制备於苯环上具有不同种取代基的苯乙醯胺，接著透过Bischler-Napieralski反应进行分子内合环，并利用钌金属对亚胺中间体进行不对称的还原反应，建立出产物中唯一的光学活性中心，最后再利用Heck反应连结两个苯环，就可以顺利得到具有光学选择性的阿朴吩类天然物。

Analogous complexes 3a" and 4a"= CpRu(PPh32, Ar = para-C6H4OMe containing methoxy group at the para-position of gem-diphenyl group were similarly obtained from protonation of the corresponding acetylide complexes via formation of vinylidene intermediate. But only complex 3a'= CpRu(PPh32, Ar2 = fluorenyl is stable in solution, and decomposed to unidentified complex when heated to reflux in THF. Deprotonation of complex 4a in the presence of base gives neutral acetylide complex 6a.

在两个相邻位置的苯基对位位置上接有一甲氧基的衍生物3a&和4a&也可利用类似的质子化反应合成，唯有错合物3a'= CpRu(PPh32， Ar2 = fluorenyl 可以稳定於溶液中，不会进行上述反应，如将其溶於四氢呋喃溶液加热至沸腾则会分解产生无法鉴定的化合物。

We asked him if Hoon was popular in Korea?

是不是接勋的，我们说是的，还和他合了影，问他勋在韩国红吗？

Its solution behaviors are similar to and even better than those of corresponding polyelectrolytes singly modified with the same hydrophobe to the added surfactant.

通过溶液共聚，将碳氢和氟碳这两种疏水单体无规地接枝到聚电解质主链上，得到的这类混合改性的聚电解质无论与碳氢小分子表面活性剂还是与氟碳小分子表面活性剂作用均表现出和同种大分子表面活性剂与小分子表面活性剂作用时相似甚至更好的缔合情形。

To insert a picture into the text, CorelDRAW good membership card before automation as preset picture of good regulation and the text of the specification linked, of course, we are depending on your good or make some custom settings to make the picture and text of interbedded more beautiful or reasonable.

在拔出图片到文本洋时，CorelDRAW精良的会员卡制息后被迫化功用已不纬为我们预设好了表率的图片与文本的嵌接规格，当然，我们也合座可以根据自己的所好或版面的需求举行一些自界说的撤销，以使图片与文本的相嵌愈加好看或公道。

This NS-MCM-41-Pd proves to be an efficient heterogeneous catalyst to catalyze aryl bromides with organozinc reagents for Negishi reaction. In the third suject, fluorescent surfactants with different conjugated aromatic moieties and changeable and gradually extended hydrophobic lengths were successfully synthesized by multiple synthesized manipulations.

首先利用颗粒大小为奈米尺度(约100 nm)、表面积约 660 m2/g 与孔径大小约 2.6 nm 且孔道分布为虫洞结构之孔洞材料，NS-MCM-41，作为异相触媒担体，稼接上钯错合物形成异相催化剂 NS-MCM-41-Pd，催化 aryl bromides 与 organozinc reagents 进行 Negishi reaction，并探讨触媒反应后再回收活性测试。

As flux used in light metal processing for metal surface treatment; as component in the production of aluminum-titanium-boron alloys and for the fabrication of grinding wheel and abrasive disc to reduce operating temperature; as flux used in welding; as fire retardent for cotton and artificial fibre; rodent for the removal of exposed lead in printed circuit board; chemical analytical reagent in electrochemistry; used to melt with silver, gold, stainless steel; as material to produce boron alloys.

作为熔剂用于轻金属加工对金属表面处理，制造铝钛硼合金和作砂轮研磨盘的成份，以降低操作温度；用于焊接上作助熔剂及制造其它氟盐的原料；用作棉花和人造纤维的阻燃剂，用来清除印刷电路中露出铅的侵蚀液；用于电化学合成的化学分析试剂，用于熔接和熔合银、金、不锈钢等金属，可做铝镁浇铸生产含硼合金的原料。

We have synthesized SiO2-main chain acrylate material successfully. First, the surface of SiO2 nanoparticle was modified with MPS (3-Methacryloxypropyl Trimethoxy Silane). Then TEGDA (Tetraethylene glycol diacrylate) was added to control the amount of organic-inorganic ratio(10-60wt%).

本实验室已成它X成二氧化矽主链压克力混成材料，首先将粒径介於20至25nm的SiO2颗粒表面改质成压克力基，利用MPS(3-Methacryloxypropyl Trimethoxy Silane)经水解与缩合，即接在SiO2颗粒表面，再加入压克力单体TEGDA(Tetraethylene glycol diacrylate)，藉以调控有机无机的比例。

Next, another novel diamine, 5-5-(4-phenyl-1,3,4-oxadiazol-2-ylbenzene-1,3-diamine, was prepared and polymerization was carried out in the same way to obtain polyimides containig triphenylamine units and 1,3,4-oxadiazole moieties in the side chain .

接下来，合成另一个新型双胺5-5-(4-phenyl-1，3，4-oxadiazol-2-ylbenzene-1，3-diamine后，以相同方法进聚缩合反应，可制得另一系列三苯胺和1，3，4-恶二唑为侧链的聚醯亚胺。

Objective To summarize our experience of treating unstable fractures of distal radius by fixed-angle volar plates combined with Kirschner-wires.

目的 探讨固定角度掌侧接骨板结合克氏针治疗不稳定挠骨远端骨折的临床效果。

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。