查询词典 amides

In general, the amidation provides the desired amides in high yields using the insoluble base CaCO 3 , TBHP as an oxidant, and a mixture of CuI and AgIO 3 (1 mol %).

一般而言，提供酰胺酰胺在高收益预期使用中亚基地溶性三日tBHP作为氧化剂、混合、崔贴水3(1克分子%)。

For the synthesis of NHC precursors, there are also several routes: condensation of glyoxal, amines and paraformaldehyde; alkylation of imidazole or monosubstituted imidazole with alkyl halide; annulation of ortho esters and 1,2-diamines; ring closure of hydrazines or amides with acetic anhydride; reduction of thiones with Na/K in THF.

关于N-杂环卡宾前体的合成途径主要有：乙二醛、伯胺和多聚甲醛的缩合反应；卤代烷与咪唑及其取代咪唑的烷基化反应；原甲酸酯与1，2-二胺的成环反应；肼或酰胺与酸酐的环化反应；用Na/K对环硫脲化合物的还原反应。

EP 103 is the new generation of the semi-synthetic water-mixable coolant with emulsifier,optimized EP and AW additives. Forms a yellow translucent emulsion with water. Skin friendly basis oil and additives are used in this products, it has free of nitrite , chorine , amines and amides.

EP 103是由乳化剂，极压剂，抗磨剂等复合成的新一代半合成水溶性切削液，与水混溶成浅黄透明体， EP 103由精选非皮肤刺激性基础油和添加剂复制而成，不含亚硝酸盐，氯，氨和胺类成分。

It is composed of three different groups of chemicals, namely cinnamic acid amides, valine amide carbamates and mandelic acid amides.

该类杀菌剂由3组化学结构各不相同的化合物组成，包括肉桂酰胺、缬氨酰胺氨基甲酸酯和扁桃酰胺类。

In order to develop an useful synthestic process, we have synthesized amides with various substitutents. The isoquinoline skeleton was constructed through Bischler-Napieralski reaction, followed by asymmetric reduction of the imine intermediates with a Ru complex to form the only chiral center. Finally, we connected the two phenyl groups by Heck reaction and effectively obtained optically active aporphine alkaloids.

为了发展一套实用的合成方法，我们首先制备於苯环上具有不同种取代基的苯乙醯胺，接著透过Bischler-Napieralski反应进行分子内合环，并利用钌金属对亚胺中间体进行不对称的还原反应，建立出产物中唯一的光学活性中心，最后再利用Heck反应连结两个苯环，就可以顺利得到具有光学选择性的阿朴吩类天然物。

And thus, either one of the two geometrical isomers can be obtainedat will in high yield with high stercoselectivity,Two different stereoselectivities are displayed in thereactions of arsonium and telluronium benzylides with α,β-unsaturated esters and amides.

发现了苄基胂、碲叶立德在与α，β-不饱和酯、酰胺的环丙烷化反应中表现出不同的立体选择性，肉桂基胂、碲叶立德与α，β-不饱和酯反应时亦是如此。

Computationalresults indicate that the no-planar trans-benzanilide is the most stable structure. The spectra indicate that the Franck Condon region photodissociation dynamics have multidimensional character withnine activemodes. The intensity of υ24 mode in methanol is much stronger than that in acetonitrile. Compared with fatty amides and benzamide, phenyl substitution for H atom on-NH2 group makes C=O solvent effects disappear.

结果表明，苯甲酰苯胺的非平面反式结构为最稳定结构；在Frank-Condon区域内，苯甲酰苯胺主要由9个活性振动模组成；其中ν24（苯环上C＝C不对称伸缩振动和CCH的面内弯曲振动，NH面内弯曲振动）振动模在甲醇溶剂中的强度远远大于其在乙腈的强度；与脂肪酰胺类化合物和苯甲酰胺的研究结果比较发现，苯基取代－NH2上的H原子使得C＝O不再具有明显的溶剂效应。

A compound of calix[4]arene,α-phenylethylamine-amides on whose lower rim, are synthesized with two routes.

采用两条路线成功合成了一种在杯[4]芳烃下缘引入α-苯乙胺的酰胺结构的化合物。

Our research focused on the synthesis of heterocyclic compounds through the reaction between the dihalogen compounds and amides or carbamates.

我们小组首次进行了二卤代化合物和酰胺或氨基酸酯之间偶联反应的研究，以期发展构筑氮杂环化合物的新方法。

Such [2.2]paracyclophane-derive amides has a higher energy barrier for the rotation of C-N than other regular amides.

硫酰胺的构象转换能垒高于相应的酰胺，在温度升高的状态下，核磁上也可以观测到相应的信号。

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。