官能团

For instance, if different acceptors were binding to anthracene, other optodes maybe constructed for guests with two different functional groups.

例如，若蒽的9、10位连上不同的受体，则有可能响应带有两个不同官能团的客体。

Besides these methods of introducing different halogen atom to aliphatic hydrocarbon and aromatic hydrocarbon were also reviewed.

根据目标分子结构的特点，可以分为两种情况：一是直接在脂肪醇中引入不同的卤素原子；二是在含有多官能团的芳香烃中引入卤素原子。

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

Starting from 3-benzoyl-5-formyl-indolizine, 3-benzoyl-5-(2'2'-diacetylethenyl)-indolizines and analogs were obtained by the 〓mediated aldol condensation or Wittig reaction. These compounds,promoted by low-valent titanium, gave highly functionlizedcycl[3,2,2]azine derivatives. The coupling reaction proceeded betweenthe carbonyl group and the carbon-carbon double bond, a rare example inMcMurry reaction.

我们以3-苯甲酰基-5-甲酰基中氮茚为原料，通过三碘化钐促进的aldol反应和Wittig反应制备了3-羰基-5-羰基乙烯基中氮茚，随后经低价钛还原偶联，没有生成正常的分子内羰基-羰基偶联产物，而是得到反常的羰基与α，β-不饱羰基的双键偶联产物，较高收率地得到了含多官能团的CycI[3，2，2]azine衍生物。

The trifluoromethyl modified benzofuran compounds synthesized by the invention contain a plurality of functional groups in benzene ring portion, and can be used as precursor for subsequent synthesis of benzofuran medicine intermediate containing trifluoromethyl.

本发明合成的三氟甲基修饰的苯并呋喃类化合物，苯环部分包括多种官能团，可以作为后续合成含三氟甲基苯并呋喃药物中间体的前体。

The epoxidation of of various olefins was carried out using LDH-F with Mg/Al=5 as the catalyst and H2O2 and benzonitrile as the oxidants. This catalytic system has excellent catalytic activity. The conversion and selectivity are both above 95% when using styrene, indene, allyl alcohol, and allyl chloride as the substrates.

以Mg/Al=5的LDH-F为催化剂，H2O2和苯甲腈为氧化剂对不同官能团化烯烃进行环氧化反应，结果表明，此催化体系具有良好的催化性能，在苯乙烯、茚、丙烯醇和烯丙基氯环氧化反应中转化率和选择性均在95%以上。

Firstly, XRD, TEM and FT-IR were used to characterize the structure of CNTs treated by dense HC1, dense HNO_3, HNO_3, H_2SO_4-HNO_3, K_2Cr_2O_7-H_2SO_4 and bromic acid. The results showed that purification treatment had no change on the structure of CNTs. But on the top of CNTs have function group such as -OH and -COOH after H_2SO_4-HNO_3 and K_2Cr_2O_7-H_2SO_4 were treated.

采用浓HCl、浓HNO_3、H_2SO_4-HNO_3、K_2Cr_2O_7-H_2SO_4、溴水共5组物质分别对CNTs进行纯化处理；借助XRD、TEM、FT-IR等分析手段对处理前后CNTs结构及形貌进行表征，发现以上5种物质纯化处理并不会对CNTs结构造成很大影响，其中H_2SO_4-HNO_3和K_2Cr_2O_7-H_2SO_4处理效果较好，除杂的同时CNTs端口带上-OH或-COOH活性官能团。

When pH is 10, adsorption time is 30 min, dosage of bone char is 0.6 g/L, the original concentration of As in drinking water is 0.5 mg/L, As removal can reach 95.2%. The adsorption behavior is fitted both with Langmuir and Freundlich isotherm. The adsorption mechanism is supposed to be Ca—OH functional groups combined with anion. And there may occur the co-precipitation between calcium hydrogen arsenate and hydroxylapatite in the aqueous solution, and ions also exchange. The saturation adsorption capacity of As reaches 4.688 mg/g. Indexes of effluent are in good agreement with the WHO stringent drinking water standards (0.01 mg/L).

研究结果表明：在pH=10，吸附时间为30 min和骨炭加入量为0.6 g/L，饮用水砷初始质量浓度为0.5 mg/L时其砷去除率可达95.2%；骨炭吸附砷的行为同时符合Langmuir和Freundlich等温吸附模型；其吸附机理可能是Ca—OH官能团结合HASO4阴离子，并产生砷酸氢钙和羟基磷灰石的共沉淀，另外还存在离子交换作用；吸附柱的饱和吸附容量为4.688 mg/g；出水砷浓度符合世界卫生组织规定饮水砷标准(0.01 mg/L)。

First, the existence of carbonyl functional group on such compounds signifcantly lower rate of their PTP1B inhibition.

羰基官能团的存在会明显降低此类化合物的PTP1B抑制率；2。

This indicates that the carboxylate group is an important binding group.

这表明羰基是重要的粘合的官能团。

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。