中间体

Epoxypropyl triethyl ammonium chloride intermediate was synthesized by the reaction of triethylamine with epichlorohydrin in aqueous methanol using K_2SO_4 as catalyst.

以环氧氯丙烷的转化率和产物中环氧基保留率的乘积作为中间体性能的评价指标，通过正交实验优化出最佳条件：甲醇水溶液为溶剂，反应温度50℃、n∶n=0.010、n∶n=1.0、反应时间为1.5 h。

As the paper industry,important addition agents,3-chloro-2-hydroxypropyl trimethyl ammonium chloride was useful the activity intermediates.

3-氯-2-羟丙基三甲基氯化铵可作为造纸工业中的重要助剂，是有用的活性中间体。

The better technology parameters of synthesis of triphenylamine, 4,4\'-dimethyltriphenylamine and 4,4\',4-trinitrotriphenylamine were obtained through the orthogonal test.

三苯胺及其衍生物是制备电荷传输材料，电致发光材料等的重要原材料，同时也可以作为有机染料和医药中间体。

In chapter 4, we have described an improved method for the preparation of ethynylferrocene. Ethynylferrocene was prepared in satisfactory yield by reaction of formylferrocene with triphenylphosphine and carbon tetrachloride followed by dehydrohalogenation in the presence of n-BuLi.

第三章中，我们研究了钯催化下碘杂环化合物的羰基化—酰胺化反应、羰基化—酯化反应和与末端炔烃的羰基化交叉偶联反应，为一步合成多官能团化合物开辟了新的途径，同时，得到的这些产物经过进一步官能团转化后，可以成为一些天然产物合成中的重要中间体化合物。

Methods 2-(piperazin-1-yl)-1-(pyrrolidin-1-yl)ethanone (2) was synthesized from pyrrolidine via amidation and substitution, followed by treating with chloroacetyl chloride and triphenylphosphine in a "one pot" manner to give the corresponding phosphonium chloride 3 in a stable and pure form after crystallization from isopropanol.

以四氢吡咯为原料，先与氯乙酰氯成酰胺，再与哌嗪发生取代反应制得中间体［（1-四氢吡咯基）甲基］哌嗪(2)；化合物2与氯乙酰氯和三苯基膦反应，经异丙醇重结晶得到稳定的有机鏻盐(3)；化合物3与3，4，5-三甲氧基苯甲醛发生Wittig反应，再与马来酸成盐得目标化合物马来酸桂哌齐特(1)。

For the next step, the fluoroalkylated triazo-compounds (RFCH2N3) reacted with triphenylphosphine affording fluoro phosphorous imines, N-Wittig reagents. The reactions of these reagents with CO2 and CS2 were studied.

氟烷基叠氮化合物和PPh3室温下反应得到中间体磷亚胺化合物，并初步研究了与CO2、CS2的氮杂-Wittig反应。

Glycerine tristearate, triethanolamine and sodium hydroxide were used as major materials to synthesize two mixed intermediates, which were then compound ed with TX-10 thus a compound deinking agent was derived.

以牛油、三乙醇胺、氢氧化钠为原料合成两种混合的中间体，再与TX-10复配得到一种固体复合脱墨剂。

In order to satisfy the growing needs of the export, New World Group is in the process of building some new plant extract factories in the habitat of raw materials. These factories produce raw materials, intermedium, functional pigment, trophism essential oil etc.

为了满足日益增长的植物提取物的出口需要，新世界集团在一些天然产物的原料产地正在建设新的植物提取物生产厂，生产包括原料药、中间体、功能性色素、营养性精油等天然产品。

Crude enzyme liquid alone had no function in decolorization, while mycelium had great function in decolorization. When added H2O2 and veratryl alcohol into the crude enzyme liquid, the decolorization rate had increased from 0% to more than 30%, so the H2O2 and veratryl alcohol played roles in the decolorization.

在利用粗酶液废水脱色研究时，发现粗酶液单独没有脱色作用，有菌体存在时脱色效果明显：粗酶液中加人过氧化氢和黎芦醇后，脱色率由0％增至30％以上，，因此酶与染料作用过程中也需要过氧化氢和黎芦醇作为中间体。

We designed new soluble poly(2,6-anthracene vinylene),and the structure and some properties were characterized by ~1H NMR, DSC and TGA and GPC.

本文以我们新近合成的2，6-二甲基蒽为起始原料，在国际上首次设计合成了可溶性的聚2，6-蒽基乙烯，对各中间体和目标聚合物进行了必要表征。

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。