吡啶基

A synthetic method for N-(5-nitro-6-chloro-3-pyridine methyl) phthalimide is studied.

研究了N-（5-硝基－6-氯－3-吡啶甲基）邻苯二甲酰亚胺的合成方法。

Then, N-(5-nitro-6-chloro-3-pyridinemethyl) phthalimide is obtained after the nitrating reaction of N-(6-chloro-3-pyridine methyl) phthalimide. The yield of the obtained product is 90.5%, and its melting point is 143.1~143.8℃.

缩合产物再经过硝化，合成N-（5-硝基－6-氯－3-吡啶甲基）邻苯二甲酰亚胺，其熔点为143.1~143.8℃，收率为90.5%。

The research of mechanism shows that the pathway of hydrocarbons oxidation performed with vanadium picolinic complexes as catalyst involves typical free radical chain mechanism.

对催化氧化反应机理的研究结果表明，本反应体系在钒氧吡啶酸络合物作用下，烃类的氧化反应按照自由基链反应机理进行，非均相催化剂遵循与均相催化剂相似的反应机理。

The harmonic vibrational force field and the vibrational spectrum of γ-picolinic acid have been calculated by the ab initio gradient program TEXAS using a STO-4-21G basis set.

本文采用TEXAS分析梯度法从头计算程序，以STO-4-21G基组计算了γ-吡啶甲酸的谐性力场和振动光谱。

A triarylamine-based picolinic acid was synthesized through the Ullmann reaction and Negishi coupling reaction. Using this class of picolinic acid derivative as an auxiliary ligand and 1-phenylisoquinoline as a cyclometalated ligand, a cyclometalated iridium complex was also prepared.

通过Ullmann反应和Negishi偶联反应，合成了一种含三芳胺功能基的吡啶-2-甲酸衍生物；并以此为辅助配体、1-苯基异喹啉为环金属配体，设计合成了一种新型环金属铱配合物。

A triarylamine-based picolinic acid was synthesized through the Ullmann reaction and Negishi coupling reaction. Using this class of picolinic acid derivative as an auxiliary ligand and 1-phenylisoquino-line as a cyclometalated ligand, a cyclometalated iridium complex was also prepared.

通过Ullmann反应和Negishi偶联反应，合成了一种含三芳胺功能基的吡啶－2-甲酸衍生物；并以此为辅助配体、1-苯基异喹啉为环金属配体，设计合成了一种新型环金属铱配合物。

In chatpter three the mechanism of the gold-catalyzed cycloisomerization of propargylic pyridine was reported.

论文第三章将报道金催化的炔丙基吡啶衍生物的环异构化反应的机理研究结果。

The thesis consists of two main sections. The synthesis of 1,3,4-thiadiazoles,triazolotriazines and dioxapyrrolinopyrazoles containing chiral pyrazolyl moietyfrom D-glucose is described in the first part and the section one is about theDiels-Alder reactions between dienophile enaminones and diene 1,2,4-triazines,which provides a new methodology to construct the pyridine compounds. A total of37 new compounds were synthesized.

本论文包含两部分内容，一是以D-葡萄糖为原料合成含手性吡唑基的1，3，4-噁二唑、三唑并三嗪及二氧代吡咯啉并吡唑类化合物；二是将烯胺酮作为亲双烯体，与双烯体1，2，4-三嗪类化合物发生Diels-Alder反应，发现了一令人意外的构建吡啶类化合物的新方法。

Cetyl pyridinium bromide monohydrate is used to exchange the metal irons in the innerlayers of sodium-based bentonite which is used as raw material and the organobentonites are obtained with orthogonal technique by changing the reaction conditions such as reaction time,reaction temperature,pH,the quantity of quaternary ammonium,and the ratio of bentonite to water.

采用正交L16(45)实验法，以Na基膨润土为原料，用溴化十六烷基吡啶为插层剂，与膨润土层间的金属离子进行离子交换，通过改变反应温度、反应时间、pH值、固液比、季铵盐添加量5个因素，得到不同条件下的有机膨润土。

In this dissertation, a series of novel multi- ferrocenyl pyridinium salts, with pyridinium cation as electron acceptor and ferrocenyl as electron donor, were designed and synthesized for generating materials possessing interesting optical and electrochemical properties.

本论文的研究目的是设计、合成系列多二茂铁基取代吡啶盐新化合物，并初步探索其光电性能。

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。