查询词典 synthesis method

Summarized the synthesis strategy and clinic pharmacodynamical of Rolipram , designed a concision route and finished it. This method is adapt to industrial produce. In part two, several normal building-block was researched and preparationed.

这些化合物的合成是在原料简单易得、反应条件容易实现的基础上进行的，同时以工业应用为目标，在合成路线和反应条件上做了一定的探索。

In the part one, we reported a novel method for the synthesis of phenacyl esters by reaction of carboxylic acids with α-bromoacetophenone promoted by potassium fluoride.

论文的起始部分系统地综述了近些年来离子液体中各类烷基化反应和各类缩合反应的研究。

The novel methods for the synthesis of Camptothecin intermediates were described as Friedlandle. Second, we synthsized the key compound—BI, and then made some improvements and innovations of the methods from the reference. The method of using more economically phenylaldehyde derivatives and phenylamine derivatives instead of o-aminobenzaldhyde was worked out.

然后成功合成重要的中间体BI，并且在参考原始文献的基础上作出了改进和创新，使用更便宜的苯甲醛衍生物和苯胺衍生物代替了邻氨基苯甲醛，合成了一系列未关B环的喜树碱中间体衍生物，并获得成功。

The method of synthesis of N,N-dimethyl-1-aminomethane-1,1-di phosphonic acid N-oxide is introduced.

介绍了一种氨烷基膦酸氮氧化物——二甲基氨基亚甲基二膦酸氮氧化物的合成方法，并进行了缓蚀阻垢性能的研究。

After six procedures for the synthesis of deoxybenzoins reported recently were studied carefully, we finally invented a new method to prepare polyhydric deoxybenzoins.

二、详细探索了多种去氧安息香合成方法，对于近期文献报道的6种制备工艺进行了跟踪研究，首次在Hoesch反应中引入了含磷或硫的催化剂，进而发明了一种制备多羟基去氧安息香的合成新工艺。

This research utilizes the method of organic synthesis to put different amount of aminophenol into hydroxybenzoic acid or caffeic acid so as to produce a series of high yield of polyhydroxy benzamides (1~40).Through the following different activity tests, discussing the applied value of cosmetics.Ⅰ.

摘要 本研究主要利用有机合成方法，将具有不同数量及在不同位置之羟基取代之安息香酸及咖啡酸分别与胺基苯酚化合物进行醯胺化反应，得到一系列高产率之多酚醯胺类衍生物(1~40)，经由下列不同活性测试方法，探讨其化菻~上的应用价值。

Synthesis of 5-nitrosaicylaldehyde was studied by the improved method of the Duff response with polyphosphoric acid.

张维庆，邹亮华，周诗彪，张儒祥，改进Duff反应合成5-硝基水杨醛

Based on the local synthesis theory, tooth contact analysis and precontrol method can only ensure that spiral bevel gears have perfect contact behavior without load; the loaded contact behavior, however, is unsatisfactory.

基于局部综合理论的弧齿锥齿轮齿面接触分析和接触性能预控技术可保证弧齿锥齿轮在无载时具有较理想的接触区域和传动误差，但无法保证其加载接触性能。

In this paper, the synthesis of polyamide acid resin, with 4, 4′-diam-inodiphenyl ether and pyromellitic dianhyride as monomers and dimethylacetamide as solvent, is reported; the preparation of polyimide fiber from PAA resin by dry- spinning method is described; and the effects of various factors of operating conditions upon the mechanical properties of the fiber is discussed.

本文报导了用4，4′—二氨基二苯醚与苯均四酸酐作单体，在N，N′—二甲基乙酰胺溶剂中合成聚酰胺酸树脂，以及用该树脂经干纺法制备纤维和制备过程中各项参数对纤维力学性能的影响。

The method of combining the root piles and static pressure grouting can be adopted to a residental building reinforcement engineering after the synthesis considering the various factor.

在综合考虑多方面因素后，认为对于某住宅楼房屋开裂加固工程，可采用树根桩及静压注浆相结合形成的复合地基技术进行加固处理，工程应用表明，根据工程实际情况合理运用复合地基进行地基加固处理能取得良好的加固效果，本工程的成功施工，对类似工程具有一定的借鉴作用。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失