查询词典 synthesis method

In the synthesis process of ligands and their rare earth complexes, metal lithium is used to substitute for n-butyllithium, such as the synthesis of fluorenyl lithium, piperonal dimethyl acetal lithium, and bis (9-fluorenyl) silylene lithium.

合成配体和配合物的中间体均采用金属锂代替正丁基锂，如芴锂、溴代胡椒醛二甲基缩醛基锂盐、甲基苯基双芴基硅烷双锂盐的制备，方法简单，操作简便，副反应少，且锂盐的浓度和用量易于控制。

This thesis consists of four parts as follows: Part I: ReviewThe purpose of the present review is to summarize the organic chemistry of polyvalent iodine compounds regarded as Chlorides, Fluorides, Oxidize reagents in the field of organic synthesis, especially focus on their synthetic application and space structure, there are lots of reaction examples to illustrate the incomparable merits of organic polyvalent iodine compounds in the synthesis of some drugs and natural products.

本论文由以下四部分组成：第一部分：文献综述本部分比较全面地回顾了有机含碘化合物作为氯化、氟化、氧化试剂在精细有机合成中的应用，主要针对含碘试剂的合成及其结构做了比较详细的综述，并且列举了大量反应实例引证了这种类型试剂在药物及天然产物合成方面具备的优势。

The failure mode and failure mechanism of hydraulic pump are analyzed in this paper,and then the temperature,pressure and rotating speed are decided primary factors for synthesis stress and the conclusion that the synthesis stress can be used in validating the life of the pumps is received.

通过对柱塞泵的故障模式及故障机理分析，确定了温度、压力和转速是与敏感应力相关的主要因素，并得出了利用敏感应力可以进行液压泵寿命的验证的结论。

B nucleic acid and protein synthesis to promote the role of polyamines Pilose (putrescine, spermidine and sperm-an) is to promote Fangde acid and protein synthesis of the active ingredient.

鹿茸中的多胺是促进枋酸和蛋白质合成的有效成分。

The results indicate that heating temperature has a great influence factor on the synthesis of SiC-Al2O3 refractory composites powder, and the powder can be synthesis by adding a amount of natural graphite into pyrophyllite and heating the mixture to over 1 650 ℃ in argon atmosphere.

结果表明：加热温度对于SiC-Al2O3系耐火粉体的合成具有重要影响。通过在蜡石中添加适量的天然石墨，并将蜡石和石墨的混合物在氩气中经1 650 ℃以上温度热处理4 h，可以合成SiC-Al2O3耐火粉体。

The goal of the successful synthesis of compounds for the subsequent synthesis of a series of 4 - to replace the aniline -6 -(2 - hydroxy replace C oxy) quinazoline compounds laid a good foundation.

目标化合物的顺利合成为以后合成一系列4-取代苯胺-6-(2-羟基取代丙氧基)喹唑啉类化合物奠定了良好的基础。

Quinoxaline; thiophene; heterocycle ; conjugated polymers; electrochemical synthesis; solid-state phase reaction synthesis

工程科技I，化学，高分子化学喹喔啉；噻吩；杂环；共轭聚合物；电化学合成；固相合成

Chiral aminoalcohol is an important kind of chiral substance in the asymmetric synthesis, meanwhile, it is widely used in the field of medicine synthesis and the resolution of raceme.

手性氨基醇在不对称合成领域中是一类重要的手性源，同时，手性氨基醇在药物合成、外消旋体拆分等领域也具有广泛的用途。

The methods of synthesis and racemization of Naproxen ester were studied and the most suitable methods for synthesis and racemization of Naproxen ester were determined.

第二章主要研究了在萘普生拆分过程中涉及到的有机合成，对萘普生酯的合成和消旋方法做了系统的研究，从中确立了最适宜的合成和消旋方法。

It was pointed out that the major difference in all the routes was the adjustment in the synthesis of intermediates: 1 racemization of-intemediate; 2 asymmetric synthesis of-intermediate, 3 the preparation of duloxetine from-intermediate.

指出所有这些路线的主要的区别在于调整了中间体的合成方法：将不能利用的-中间体消旋，手性合成-中间体，-中间体制备盐酸度洛西汀。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"