查询词典 alder

Diels-Alder reaction has a huge applied value as their high regional selectivity and stereoselectivity .

Diels-Alder 反应，因其很高的区位和立体选择性而具有巨大的应用价值。

The high yield(53%) of Diels-Alder reaction of alkylthiofuran with alkylacetylenedicarboxylate is observed when used PF6 ionic liquid.

研究表明，呋喃类化合物的极性越低， Diels-Alder 反应的活性越高。

The key steps included Diels-Alder reaction to establish the molecular skeletion of diphyllin and the selective reduction.

关键步骤是确定diphyllin分子的骨架的Diels-Alder反应和选择性还原反应。

2, 3-Naphthalocyaninatocobalt compounds, a new type of functional materials, have been successfully prepared by using of Diels-Alder reaction.

采用Diels-Alder方法合成了2，3-萘二腈和6，7-二溴-2，3-萘二腈化合物，并以此为前体成功地合成了相应的钴萘酞菁系列化合物---一种新型的功能有机材料。

Because of the good regio-and stereoselectivity, Diels-Alder reaction has become the important tool of synthetic chemistry and significant object of theoretical study.

Diels—Alder反应由于其良好的区位和立体选择性而成为合成化学的重要工具及理论研究的重要对象。

In the synthetic reaction process dicyclopentadiene is a terminal group sealing agent,and there is no Diels-Alder addition reaction taking place.

在合成反应过程中二聚环戊二烯是端基封闭剂，无Diels-Alder加成反应发生。

Diels-Alder reaction has been one of the cornerstone reactions in organic chemistry for the construction of six-membered rings and the formation of carbon-carbon binds.

Diels-Alder 反应是有机化学中建构六员环和碳碳键生成最为重要的反应之一。

In the second part, a fully functionalized C-ring synthon was synthesized by asuccessful use of a known intramolecular Diels-Alder reaction.

第二部分我们运用一已知分子内DielS-Alder反应成功地进行了官能化的Taxol C环片断的合成。

Diels-Alder reaction has been one of the cornerstone reactions in organicchemistry for the construction of six-membered rings and the formation ofcarbon-carbon binds.

Diels-Alder 反应是有机化学中建构六员环和碳碳键生成最为重要的反应之一。

This synthetic strategy is based on the combination of different polymerizations, especially controlled polymerizations, and the combination of different controlled polymerizations with coupling reactions, such as "click" reactions, Diels-Alder reaction and active ester reaction etc..

这一合成方法的思路是基于将不同聚合反应，尤其是不同可控聚合反应相结合，或者将可控聚合与不同的偶合反应，例如与点击反应、Diel-Alder反应和活性酯反应等相结合。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。