查询词典 synthesis method

Monochloroethylene carbonate is prepared by chlorination of ethylene carbonate with sulfuryl chioride ,a solution of monochloroethylene carbonate in ethylene carbonate is reacted with triethylamine to give vinylene carbonate.A parameter design method was applied to select the optimum synthesis conditions.63.3％ and 78％ yields superior to the conventional for monochloroethylene carbonate and vinylene carbonate were obtained respectively,and the process was also simplified .

以碳酸乙烯酯为原料，用磺酰氯作为氯化剂生成一氯代碳酸乙烯酯，三乙胺为脱卤化剂在碳酸乙烯酯溶剂中合成碳酸亚乙烯酯，对一氯代碳酸乙烯酯和碳酸亚乙烯酯制备的工艺参数进行优化，收率分别达到63.3％和78％，均超过了传统方法，且简化了工艺，缩短了反应时间，易于工业化生产。

An efficient and new method for the synthesis of symmetrical dibenzyldiselenides is described.

这是一种非常有效的合成二硒醚的新方法。

As well as with other method synthesis application.

以及与其他方法的综合应用。

The new method is a synthesis of the best features of the old methods.

新方法是综合旧方法的长处而成的。

In modem organic synthesis, it is an important method to synthesize optical pure compou...

在当代的有机合成中，采用适当的手性源来合成光学纯的化合物是一种重要的方法。

In this paper, a method of oligonucleotide synthesis optimization is proposed on the basis of the synthesizer.

该方法有可能使大量不同DNA探针制备成本高的难题得到解决，从而使寡核苷酸基因芯片的成本有效的降低，使之能够更广泛的应用。

Phenyl or m -tolyl selenoamides reacted with functionalized α-haloacetic acid in 1∶1 or 1∶2 molar ratio with no catalyst in various alcohols to undergo a selenium transfer reaction. This reaction in dif-ferent molar ratios furnished the same C—Se—Se—C coupling products with a special structure bis diselenide. A new and facile method for synthesis of such bis(alkoxycarbonyl-methyl) diselenides with the advantages of mild reaction conditions, high yields, easy availability of starting materials and good chemical selectivity was provided.

芳基硒代酰胺与氯乙酸在各种醇中无催化剂下以1∶1和1∶2的比例投入，发生硒转移反应，不同原料投入比下的反应生成了同一种C—Se—Se—C偶联产物——具有多功能团的二烷氧羰基甲基二硒醚，提供了一种新的合成二烷氧羰基甲基二硒醚的简便方法，且反应具有条件温和、产率高、原料易得和选择性好等优点。

Image restoration ; image inpainting ; image completion ; variational method ; partial differential equation; total variation ; texture synthesis

图像复原；图像修补；图像补全；变分方法；偏微分方程；全变分；纹理合成

By generating the closed form "triangular" Groebner Bases, the closed form symbolic solution has been obtained. An example of synthesis of planar rigid body guidance is given to demonstrate the strategy and efficiency of the method.

在生成该系统的封闭形式的"三角化"的Groebner基的基础上，求出了问题的封闭形式的符号解，以平面铰链四杆机构的刚体导引综合问题为例，说明该方法的思路及有效性。

At first, the theory and method of unconstrained E-pulse synthesis are obtained based on the theoretical deduction.

首先，在理论推导的基础上，给出无约束E-脉冲波形综合的原理和方法。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。