吡啶

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。

The best result is obtained for the film of 1-ethyl-4-[5--1,3,4-oxadiazol-2-yl] pyridinium tetrafluoroborate.

在这些离子液体中，N-乙基-4-[5--1，3，4-噁唑-2-]吡啶四氟硼酸盐的摩擦学性能最好。

Salt 8 exhibits an ICT absorption band at lmax572 nm in ethanol, which does not correspond to any of the TTF or pyridinium moieties, and obeys the Beer–Lambert law.

盐 8展品的信息和通信技术的吸收带在572 nm的lmax 乙醇，这不符合任何信托基金或吡啶基，并服从啤酒兰伯特法。

The synthesis of designed for an organizing functionalized system by supramolecular interaction is emphasized. We have designed three series of compounds and explored their properties.1 Two asymmetry derivatives from pyridinium and their complexes have been synthesized and characterized.

合成了两种不对称吡啶衍生物，将它们和硫氰酸盐组装成了三种配合物，得到了三个配合物单品，并分别用红外、核磁、电喷雾、单晶解析现代化学手段进行了表征，研究了它们的固体荧光性质。

The floatation separation behaviuor of Pd (superscript 2+) by KBr-cetyl pyridinium bromide system in the presence of NaNO3 and the conditions for the separation of Pd (superscript 2+) from other metal ions were studied.

研究了硝酸钠存在下，溴化十六烷基吡啶－溴化钾体系浮选分离钯的行为及与一些金属离子分离的条件。

In order to solve the problems of complex cellulose production process and serious pollution, The paper investigated the solubility of cotton stalk cellulose in ionic liquid N-ethyl pyridinium bromide. The structural differences between cotton stalk cellulose and cellulose regenerated from the ionic liquid were investigated using infrared spectroscopy and chemical analysis. Recovery ratio of ionic liquids was also studied.

为解决纤维素生产加工过程复杂且污染严重问题，试验探讨了棉秆纤维素在离子液体溴代N-乙基吡啶中的溶解性能，采用红外光谱等手段对棉秆纤维素在离子液体中溶解和再生前后的结构变化进行了分析，并探讨了离子液体的回收。

The results of intrinsic viscosity,elemental content and gel permeation chromatographic analyses showed the extent of biodegradation during the biological treatment increased with the content of pyridinium group in the polymer.

生物耗氧处理过程中该阳离子聚体片材的特性粘度、元素含量和凝胶渗透色谱分析的结果表明：聚合物中吡啶盐含量越大者，其生物降解性就越显著。

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。

The results show that Pd (superscript 2+) combines with KBr and cetyl pyridinium bromide into a ternary ion association precipitate2(PdBr4) in the aqueous solutions, which floated above the surface of water phase with clear interface.

结果表明，在水溶液中，Pd(上标2+)与溴化钾、溴化十六烷基吡啶形成不溶于水的三元缔合物2(PdBr4)，此三元缔合物可浮于水相上层分成界面清晰的液－固两相。

The floatation rate of Pd (superscript 2+) reaches 100% when the concentrations of NaNO3, KBr and cetyl pyridinium bromide in solution are 0.05 g/mL, 3.0×10^(-2) mol/L, 5.0×10^(-4) mol/L(pH 4.0), respectively. Pd (superscript 2+) could be separated from Ru (superscript 3+), Al (superscript 3+), Cr (superscript 3+), Ni (superscript 2+), Ga (superscript 3+), Fe (superscript 3+) and Zn (superscript 2+) by floatation quantiatively. A method of flotation separation and enrichment of Pd (superscript 2+) was established.

当溶液中硝酸钠、溴化钾、溴化十六烷基吡啶的浓度分别为0.05 g/mL，3.0×10^(-2)mol/L，5.0×10^(-4)mol/L，在pH 4.0时，Pd(上标 2+)的浮选率达到100%，Pd(上标 2+)可与Ru(上标 3+)，Al(上标 3+)，Cr(上标 3+)，Ni(上标 2+)，Ga(上标 3+)，Fe(上标 3+)，Zn(上标 2+)定量分离，据此建立了浮选分离和富集Pd(上标 2+)的新方法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。