芳芳

At present, the design of new and good photochromic properties of the aryl vinyl compounds is still research in the field of hot spots.

目前， 设计合成新的具有良好光致变色性能的二芳基乙烯类化合物仍然是该领域的研究热点之一。

Substituted aryl ethers are the key intermediate compounds to synthesize dye, medicine, pesticide and so on.

取代芳基醚这类化合物，是合成染料、医药、农药等的重要中间体。

The different substituents on the aryl ketones determined the different base used in the reactions.

芳基酮上的取代基决定了合成中所用碱的类型。

The aryl group can be a five- or six-membered heterocyclic ring.

芳基可以是五-或六-元杂环的环。

The catalytic performance for the Heck reactions of various substituted aryl halides with acrylic acid or styrene was studied.

研究了该催化剂对各种取代卤代苯与丙烯酸、苯乙烯的Heck芳基化反应催化性能。

It is imaginable that the catalytic system could be used in cross-coupling of aryl bromides with other active methylene compounds.

预计该催化体系可以广泛用于溴代芳烃与其它含活泼亚甲基化合物的交叉偶联反应。

Aryl acid compounds are provided in accordance with the invention.

本发明提供了芳基酸化合物。

Aim To study the synthesis and antidepressant activities of aryl alkanol piperazine derivatives.

目的 研究芳烷醇哌嗪类化合物的合成及抗抑郁活性。

In the IUPAC system, alkyl and aryl substituents and many functional groups are named as prefixes on the parent.

在系统命名法中，烷基、芳基取代基和许多官能团被命名为前缀并放在一个母体的前面

However,aryl arenesulfonates and mesylates are attracting more interesting.

近年来，芳基磺酸酯和甲磺酸酯参与的交叉偶联反应日益受到关注。

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。