查询词典 aryl

In the part Ⅲ, we synthesized same aryl acid esters by 〓 catalyst system, and found that this system can be used to industrial procedure widely.

第三部分，我们对〓复合催化芳香羧酸酯化的情况进行了探讨，发现了一个新型实用的催化体系，并具有较好的工业应用前景。

In the present paper, regiospecific aryl nitration and consequent derivation of meso-tetraarylporphyrins were studied.

本论文对meso-四芳基卟啉芳环的定位硝化反应及其衍生物的合成进行了研究。

However, led to a mixture of 4 and 5 the reaction with aryl ketone oximes. Regioselectivity of the reaction and configuration of the products are discussed.

文中讨论了反应物的空间效应、亲核试剂对该反应区域选择性的影响，并论证了产物的构型。

Based on the above analysis, a series of 5-alkyl-6-naphthylmethyl-1-(aryl or alkyoxyl-carbonyl-methyl) uracils were designed.

本文成功探索了在 C5-位引入溴的高区域选择性方法，为今后 C5-的结构改造提供了一条有效可行的途径。

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。

We have investigated the Suzuki cross-coupling reaction of aryl bromides at low catalyst loading and low temperature.

经过一系列实验条件的摸索，采取了在比较低的催化剂用量和比较低的温度的实验条件下进行了一系列底物的Suzuki偶联反应，结果以极好的收率得到相应的偶联产物。

Part one we reviewed the synthesis of α-substituted aryl acetonitriles catalyzed by phase transfer catalysis.

第一部分综述了合成α-取代芳香乙腈的相转移催化反应的研究。

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。

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。